My Mother Demonstrates Sexual Intercourse 1-21

page views:1 Publication date:2023-06-11 12:37:37

This post was last edited by asura10000 on 2019-08-20 17:37.
Chapter 1: My First Sexual Intercourse Demonstration Class

This happened when I was a third-year student at vocational nursing school. That June, after the graduation exams, I was bored at school and went to see my first-year homeroom teacher, Ms. Chen. Ms. Chen had always been very kind to me, and I was very grateful to her.

I sat in Ms. Chen's office for a while, casually chatting about the past. The conversation drifted to her recent anatomy class. She said that her class was all girls, and they were very slow learners. She asked if I could help teach the younger girls. Of course, I said no problem, because Ms. Chen was my favorite teacher and the most beautiful teacher in the school. I was naturally obliged to help such a beautiful teacher.

At the time, Ms. Chen was about thirty-four or thirty-five years old. Although she was married, she was still incredibly beautiful. When she taught our class, I was the class monitor. She never hid her favoritism towards me, which even aroused the jealousy of many boys in the class. Unfortunately, she only taught me for two years. In the third grade, she got a male teacher, and Ms. Chen went back to teach her current class in the first grade.

I asked, "What do you need me to do?"

Ms. Chen smiled and said, "Just give a demonstration for the younger girls."

"Give a demonstration? What kind of demonstration?" I don't remember ever having a human anatomy demonstration class!

Ms. Chen smiled and said we'd find out later. Seeing that she didn't want to say more, I didn't ask any more questions. Ms. Chen also asked me to call my mother so she could treat us to dinner after class to thank me for my help.

I didn't want Ms. Chen to treat me to dinner, but then I thought, wouldn't this be a good opportunity to get closer to the teacher? And I could also take the opportunity to treat her back! So I agreed.

My mother's name is Huang Meilian. She was a doctor, thirty-eight years old at the time, 1.68 meters tall, with measurements of 35-24-36—a standard model figure. I was eighteen then, 1.78 meters tall, weighing 69 kilograms, and quite handsome—a universally acknowledged good-looking man.

The next morning, my mother and I went to Professor Chen's office. Although her office wasn't large, it was her own private space. The furnishings were simple, but very clean.

"Hello, Professor Chen! This is my mother,"

I introduced them. Professor Chen looked at my mother and couldn't help but praise, "Li, your mother is truly a beauty!"

My mother smiled slightly and said, "Professor Chen is very beautiful too!"

Professor Chen made tea for us and said, "Please wait a moment. This class hasn't ended yet; my anatomy class is next."

So my mother and I drank tea and chatted. Soon it was time for class to end, and the classroom next door suddenly became lively. Several girls came to Professor Chen's office door and peeked inside.

"What are you looking at? Don't you know that's very impolite?" Teacher Chen said sternly.

One girl stuck out her tongue and said, "Didn't the teacher announce that the next class would be a life demonstration class? We want to see the life model first."

Teacher Chen chuckled, "Alright, you've seen it, are you satisfied?"

The girl asked with a smile, "Teacher, there are two people here, which one is today's life model?"

"You're all girls, so the life model I invited is of course a man!"

At this moment, the bell rang, and the girls all rushed back to the classroom. Teacher Chen also stood up and said to my mother and me, "Please come with me."

The classroom was next door. When we followed Teacher Chen into the classroom, there were already more than thirty girls sitting inside; there wasn't a single boy in the entire class.

Teacher Chen asked my mother to sit down on a chair, and then asked me to stand in front of the podium.

"Classmates, today we are fortunate to have senior student Li Xiaoming as our human model. Later, you can learn about the differences between men and women by observing the male body."

The thirty-odd female students in the audience applauded.

I suddenly felt a sense of unease, but it was too late to regret it.

"Li Xiaoming, please take off your clothes." Teacher Chen nodded at me.

I reluctantly took off my only piece of clothing, a sports shirt, revealing my fairly muscular chest.

"Please take off your pants too."

I glanced at Teacher Chen; she looked at me resolutely, so I had no choice but to take off my sports shorts as well.

"And take off these briefs as well." Teacher Chen continued.

If I took them off, I'd be completely naked! Standing naked on the stage in front of so many female students—was this what Teacher Chen meant by a human model?

Embarrassed, I took off my only piece of clothing, my underwear, and covered my private parts with my hands. All thirty-odd pairs of eyes in the class were fixed on me. This was the first time in my life I'd ever been completely naked in front of women, especially over thirty of them.

"To facilitate a comparative teaching session with the male body, I'd like to invite another female student to come up and demonstrate the female form. Which student would like to come up?" Teacher Chen looked around, but not a single girl responded.

"Since no student is willing to come up, I'd like to invite Ms. Li to the stage to demonstrate female nudity for us. Would Ms. Li be willing?"

As I watched Teacher Chen in astonishment, my mother stood up from her seat. She walked shyly to the front of the stage and asked, "Teacher Chen, should I also take my clothes off?"

Teacher Chen nodded and said, "Yes, is Ms. Li willing?"

My mother hesitated for a moment, and I assumed she wouldn't agree. Unexpectedly, she looked at Teacher Chen and said, "Alright, for the students to learn, I'm willing to demonstrate female nudity."

With that, my mother took off her skirt. Underneath, she wore a set of blue floral lace lingerie. The lingerie was designed to be very sexy; except for a small piece of fabric embroidered with a few flowers in the front, the rest was almost entirely transparent.

My mother seemed to have made up her mind. Without any hesitation, she took off her lingerie and stood confidently beside me. It was the first time I had ever seen my mother naked, and I was amazed at how well she had maintained her figure! Her breasts were large and firm, her abdomen smooth and taut, her legs long and slender, and her buttocks slightly upturned. Wearing five-centimeter-high orange-red heels, she appeared exceptionally tall and beautiful.

"Students, you now have a male entity and a female entity standing before you. I'd like to ask one of you to explain their differences," said Teacher Chen, lightly tapping my hand covering my lower body with her pointer.

I awkwardly placed my hands behind my back, my penis limp and drooping due to nervousness, looking somewhat comical.

Several students raised their hands.

"Student Hu Yumei, please speak," Teacher Chen said, pointing to a bespectacled girl in the front row.

"Men have prominent Adam's apples, while women don't; women have full breasts, while men don't," said Hu Yumei.

"Anything else?" Teacher Chen asked.

"This…" Hu Yumei's face suddenly flushed red; she shook her head and sat down.

"Wang Yingying, what other differences do you think there are between male and female bodies?" Teacher Chen asked, pointing to another girl.

This time, Wang Yingying was the boldest girl who had stood up at the door of Teacher Chen's office earlier after class. She was of medium height, with a pair of bright, large eyes, and looked quite pretty.

"The biggest difference between men and women is their genitals," Wang Tongxue said in a clear voice. "The male genitals have a protruding penis, while the female genitals are an opening that is not visible from the outside. Also, men have a scrotum, while women do not."

Teacher Chen said approvingly, "Wang Tongxue's analysis is very correct. That's right, the male external genitals consist of a penis and a scrotum." Teacher Chen pointed to the corresponding part of my lower body with the pointer and explained, "As for women, their external genitals are more hidden. Li Mama, may you sit on the podium and demonstrate your external genitals to the students?"

"Sure." My mother readily agreed. She sat on the podium, her two feet in high heels on the edge of the podium, her legs spread in an M shape, completely displaying the most private part of a woman to the whole class.

"Students, please look, the female external genitalia consist of the mons pubis, labia majora and minora, and vagina. Here, I want to remind you that there are three distinct orifices of flesh in the female lower body," Teacher Chen explained, walking over to the mother. "Look, the smaller orifice at the top is called the urethra, the passage for urination. Some couples lack necessary sexual knowledge and often mistake the urethra for the vagina, which can easily cause harm to the woman. Below that is a larger orifice, the vagina, which is used for sexual intercourse and is also the birth canal. The smaller, tightly closed orifice at the bottom is called the anus, generally used for defecation."

"Teacher Chen, what do you mean by 'generally'? Isn't the anus only for defecation?" a student asked.

"That's right. Some sexual acts involve using the anus for intercourse, which is a very lewd and obscene act that only extremely promiscuous women would do," Teacher Chen explained.

"So, how do men engage in sexual intercourse with women?" This time, it was the mischievous Wang Tongxue who asked the question.

"Although this isn't the question we'll be addressing in today's lesson, it's very important knowledge for the students. So, how about we have Ms. Li demonstrate sexual intercourse for the students?" Teacher Chen's decision was met with unanimous applause from the entire class.

"Does Ms. Li have any questions?"

"No," Ms. Li shook her head, "I just want to know how I should demonstrate."

Teacher Chen walked over to Ms. Li and said, "It's actually quite simple. For example, the pointer in my hand is the male penis. You see, inserting the penis into the vagina like this is sexual intercourse." As Teacher Chen explained, she carefully and gently inserted the pointer into Ms. Li's vagina.

"Teacher Chen, your pointer is so hard, of course it can go in, but Li Tongxue's penis is limp, how can it go in?" It was Wang Tongxue who spoke again.

"That's right, Wang Tongxue's observation is quite meticulous. Therefore, before intercourse, in order to ensure the male's penis is fully erect, foreplay is necessary, such as kissing, caressing, and oral sex."

Teacher Chen walked to my side, reached out and grasped my penis, gently stroking it a few times, and then said, "Look, isn't Li Tongxue's penis a bit bigger than before?"

I didn't expect that the school's top-ranked and beautiful teacher would actually help me masturbate. Stimulated by this, my penis naturally reacted.

"Now, please come up and touch Li Tongxue's penis, and experience firsthand how to help a male's penis achieve a full erection."

I could hardly believe that Teacher Chen was going to have all the girls come up and touch my penis. I looked at my mother somewhat bewildered. My mother was still sitting naked on the podium, smiling at me without saying a word.

"Please line up and come up one by one in an orderly manner. When you touch it, please don't use too much force, as a male's penis can sometimes be quite fragile," Teacher Chen instructed.

So all thirty-odd girls in the class lined up in front of me. The first girl to come up was Hu Tongxue. She touched my penis shyly and quickly withdrew her hand, causing the girls behind her to burst into laughter.

The next few girls were much bolder. They imitated Teacher Chen and gently stroked my penis. One of them even touched my scrotum.

Then came the boldest one, Wang Tongxue. She first used her gloved hand to stroke my penis a few times, then touched my scrotum. Just when I thought it was over, she squatted down and opened her mouth to suck on my penis a few times.

I looked at her in shock, then at Teacher Chen. The teacher didn't say a word of reproach; it seemed she didn't object to Wang Tongxue's bold behavior.

I thought helplessly: I can't believe my virginity is being ruined by a girl's mouth. How tragic!

The next few girls, some timid, only touched it briefly before turning away, while others, bolder ones, imitated Wang Tongxue and opened their mouths to suck my penis. With the constant stimulation from so many girls, my penis quickly became very hard, the glans almost touching my stomach.

"Alright, students, look, Li Tongxue's penis is fully erect from the foreplay just now. That's the purpose of foreplay. Actually, besides touching and oral sex, kissing is also very important in foreplay.

Now, let me demonstrate kissing."

Teacher Chen walked up to me and said, "Li Tongxue, have you ever kissed before?"

I shook my head to indicate no.

"Then let me guide you! Please open your mouth," Teacher Chen brought her mouth close to mine, then she put her tongue into my mouth.

To be honest, this was my first time kissing. I was pleasantly surprised to find that kissing was such a fun thing. I sucked hard on the teacher's tongue, then put my own tongue into her mouth.

Our kiss lasted about three minutes before she asked, "Now, is it safe to insert Li Tongxue's penis into her vagina?"

"Teacher Chen, could Li Tongxue demonstrate insertion?" Needless to say, it was that mischievous Wang Tongxue again. "

While such a demonstration might be considered pornographic, acquiring correct sex education is very important and necessary for you during your adolescence. How about this, could Li's mother give Li Tongxue a sex demonstration, giving the students a chance to witness it firsthand and learn how to have sex with the opposite sex?"

Did Teacher Chen really want my mother and me to perform this potentially incestuous sex demonstration in front of over thirty female students? I was so shocked that my mouth gaped open, unable to close it for a moment.

What surprised me even more was my mother's attitude. She nodded without hesitation and said, "As long as it can help these students, there's nothing wrong with me giving this demonstration."

"Since Ms. Li is willing to give a sexual intercourse demonstration, then Mr. Li, please come over here," Teacher Chen gestured for me to walk to the front of the podium. "Students, in order to observe more clearly, you can come to the side of the podium, but please do not interfere with Mr. Li and his mother's sexual intercourse."

So all thirty-odd girls from the class gathered around. I was both excited and nervous. Was I really going to have sex with my mother in front of so many girls? I gripped the base of my penis with my right hand, the head pointing towards my mother's vaginal opening, but I didn't dare to insert it.

Teacher Chen gently pushed me from behind, so I took the opportunity to thrust forward, the head of my penis pressing against my mother's clitoris. My mother let out a soft "Oh," and slightly adjusted her lower body angle, and my penis entered my mother's vagina.

"Wow! It went in!"

several girls exclaimed.

"That's right," Teacher Chen explained, "This is sexual intercourse. Li Tongxue's penis has successfully entered Li's mother's vagina. Of course, this kind of insertion requires the woman's vagina to be fully lubricated, otherwise the woman's vagina may feel uncomfortable due to injury." "

So how can it be fully lubricated?" one girl asked.

"Men can make a woman's vagina fully lubricated by caressing her, or even by giving her oral sex. Li Tongxue, why don't you try giving your mother oral sex?"

I looked at my mother, and she nodded at me with a rosy complexion. So I pulled out my penis, squatted down slightly, and licked my mother's vaginal opening a few times with my tongue.

Teacher Chen smiled and said, "It seems that Li Tongxue hasn't mastered the method of oral sex yet. You can first lick back and forth on your mother's labia majora and minora, and then use the tip of your tongue to tease your mother's clitoris. The clitoris is the most sensitive sexual organ for women."

I did as Teacher Chen taught me, and my mother indeed cried out excitedly.

"Teacher Chen, what does Li's mother's 'ah' sound mean?" Wang Tongxue asked again.

"This means that Li's mother is sexually aroused, which usually manifests as moaning. Look, there's already some vaginal fluid coming out of Li's mother's vagina, right?"

"Really! There's a lot of vaginal fluid coming out of Li's mother's vagina!"

"Teacher Chen, it seems like Li's mother's vaginal opening is still wriggling!"

"The students are very observant! This wriggling means that Li's mother wants penile penetration. Li, try inserting your tongue in again."

So I inserted my tongue into my mother's vagina and thrust it in and out. My mother quickly let out moaning sounds again.

"How do you feel?" Teacher Chen asked me.

"Teacher Chen, Mom's vagina seems wet and slippery inside, and there seems to be water seeping out from the vaginal walls!"

"That's right," Teacher Chen said, "This fully demonstrates that your mother urgently needs your penis to penetrate her and have sex with her. Li Tongxue, now insert your penis into Mom's vagina and thrust back and forth."

I started having sex with my mother as Teacher Chen instructed.

"Teacher Chen, Li Tongxue's penis doesn't seem to be fully inserted yet!" This time, someone asked such an explosive question.

"Very good question!" Teacher Chen explained, "Li Tongxue's penis is probably nine inches long, and Li's mother's vagina is probably no more than seven inches deep, so Li Tongxue's penis can only go in this much; any further and it will penetrate into his mother's uterus."

"Isn't that okay?" the same girl from before said.

"It's not impossible, it's just that our sex demonstration today doesn't require penetration into the uterus. Li's mother, could you let your son have sex with you in the uterus?"

"Yes, I can!" the mother nodded.

"Li Tongxue, try inserting it again!" Teacher Chen said.

I slowly inserted my penis again, the glans quickly hitting a soft spot. The mother let out a soft moan, her lower body trembling slightly. I knew the glans had reached the opening of her cervix.

I looked at the mother, unsure whether to go deeper. The mother smiled slightly at me, her face flushed, and said, "Don't move, let me do it!"

So the mother slightly lifted her lower body, and I felt the glans push through that soft flesh, entering the mother's uterus.

"Wow! It's all the way in!"

"Li's mother's vagina is really amazing! I wonder if I could do that!"

several girls chattered excitedly.

"Alright, Li Tongxue and his mother have successfully demonstrated penetration into the uterus. It was a very successful demonstration. Do any of you students have any questions?" Teacher Chen continued.

"Teacher Chen," Wang Tongxue stepped forward again, "didn't you say that the anus can also be used for intercourse?

Could you please have Li Tongxue and his mother demonstrate for us as well?"

"This class is almost over," Teacher Chen said. "Mrs. Li, could you demonstrate anal intercourse again next class?"

The mother nodded and said, "If it helps the students' learning, I'd be happy to help."

"Alright, Li Tongxue, you can pull your penis out now. That's all for this class. If you have any questions, you can discuss them next time."

I reluctantly pulled out my penis, and just then, due to the prolonged erection and various physical and mental stimulation, I couldn't hold back any longer and ejaculated! A stream of milky, viscous semen shot out from the tip of my penis. Just as my glans left my mother's vaginal opening, most of the semen landed at the entrance, with some splashing onto her stomach.

Ms. Chen was stunned, not expecting me to ejaculate so suddenly. The students stared at me blankly, as if I were a monster. My mother, her face flushed, looked at me silently.

"Ms. Chen, is this ejaculation?" a female student asked softly.

"Yes, this is ejaculation," Ms. Chen seemed still somewhat dazed. She dipped her hand in some semen and said, "This little bit of semen can conceive many children. Students, if you want to enjoy the pleasure of sex without harming yourselves, you must use effective contraception. In the next class, I will teach you how to use condoms."

I stood incredibly embarrassed in front of the podium until someone handed me a pack of tissues, and I finally came to my senses.

"Thank you!" I said.

It was that mischievous Wang Tongxue! She looked at me affectionately and said, "This isn't your fault. Unless you're not a normal man, who can guarantee they won't ejaculate?"

I thanked her again and began wiping the semen from my mother's vaginal opening, then from her belly. My mother obediently let me wipe her until she was completely clean, then she closed her legs and got off the platform to put her underwear and skirt back on.

This extremely lewd sex demonstration class ended just like that. I was surprised to find that my mother was so beautiful and sexy, and at the same time, I was glad I could have sex with her. I even started looking forward to the next sex demonstration class.

Yes, I looked forward to having sex with my mother again!

Chapter Two: Sexual Practice in the Hotel

The hotel where Teacher Chen treated us to lunch was not far from the nursing school. Although it wasn't a luxurious hotel, the decor was unique. The private rooms weren't large, but they had a charming ambiance, perfect for small gatherings of three to five people. Nursing school students, both male and female, often ate there for secret rendezvous.

"Mrs. Li, Li Tongxue, please order whatever you like, don't be shy," Teacher Chen said, taking the menu from the hotel waiter after we were all seated.

Teacher Chen had been wearing a professional suit in class, but now she had changed into a white tank top with an orange vest over it, and an orange floral print skirt, looking quite vibrant.

"Teacher Chen, don't be so polite. Xiaoming and I are very casual about meals."

"Then let's each order one dish!" Teacher Chen said, handing over the menu.

Mom took the menu and looked at it. She ordered scallion ribs, I ordered a double-flavored fish head, and Teacher Chen then ordered stir-fried river shrimp, stir-fried water spinach, and a bowl of fresh mushroom and turtle soup.

"What kind of alcohol do you like?" Teacher Chen asked again.

Mom quickly shook her head and said, "I don't usually drink much."

Knowing Mom's usual preferences, I said, "How about some beer?"

So Teacher Chen ordered three bottles of beer.

After all the dishes were served, Teacher Chen instructed the waitress to wait outside and specifically told her not to come in casually.

"Mrs. Li, thank you so much today!" Teacher Chen stood up and ladled a bowl of soup for Mom.

"You're too kind, Teacher Chen."

Teacher Chen was about to ladle some soup for me, but I quickly took the ladle from her hand, ladled a bowl of soup for Teacher Chen first, and then ladled one for myself as well.

"Mmm, this soup tastes really good!" Mom said after taking a sip of soup.

"The most special dish here must be this mushroom and turtle soup," Teacher Chen said, raising her glass to suggest we all have a drink.

"There wasn't supposed to be a sex demonstration in today's class; it was a last-minute request from the students. I didn't expect Mrs. Li to agree so readily. I'm truly grateful!" "

It's just a small matter, yet you've troubled the teacher to spend money. Actually, it's my honor to be able to help the students."

Teacher Chen and Mrs. Li exchanged pleasantries and toasted each other. Then Teacher Chen raised her glass to me, saying, "Li Tongxue, thank you too today! Your performance was excellent."

"You flatter me, Teacher!" I also toasted Teacher Chen.

"Li Tongxue, I'd like to ask a question, though you don't have to answer," Teacher Chen said, looking into my eyes. "Was your sex demonstration with your mother today your first time?"

I was stunned, not expecting Teacher Chen to ask such a private question. I didn't know how to answer. I looked to my mother for help, and she smiled and said, "Xiaoming, just tell the truth. I'd like to know too."

I said, "Teacher Chen, does masturbation count?"

Teacher Chen and my mother both laughed. Teacher Chen smiled and said, "Masturbation doesn't count."

"Then that's it," I said honestly.

"So, your sex demonstration with your mother was your first time? Li's mother, your son has given you his virginity. You're really lucky!" Teacher Chen said.

Mom's face flushed red. She took a sip of her drink and said somewhat embarrassedly, "Teacher Chen, you're joking. What Xiaoming and I did in class today was just a teaching demonstration, not actual sexual intercourse. Besides, he didn't ejaculate inside me, so it can't be considered his first time." "

Isn't a sexual demonstration still sexual intercourse? Your son's penis was inserted into your vagina, doesn't that count as sexual intercourse? It's just a little regrettable that he didn't ejaculate inside you for the first time."

"Teacher Chen, saying that makes me feel pressured." Mom said, raising her glass to toast Teacher Chen.

"Is the pressure you're talking about referring to incest? Actually, there's no need for that," Teacher Chen gestured for us to eat, then continued, "Judging from your behavior today, you seem to be a very open-minded person, don't you?"

"Teacher Chen, what's your view on incest?" Mom asked.

Ms. Chen pondered for a moment and said, "Actually, the reason why mother-son intercourse is taboo is entirely due to feudal ideology. In the past, men treated women as private property, not allowing others to infringe upon them. Plus, the possibility of birth defects in children born from mother-son intercourse was very high, hence the taboo against incest. Now that technology is so advanced, intercourse no longer leads to pregnancy, so people's views should also change."

My mother asked again, "What kind of change are you talking about, Ms. Chen?"

"I think that since intercourse is a pleasurable experience, there shouldn't be so many taboos. As long as both parties are willing and it doesn't affect family harmony, they can do it."

"So, Ms. Chen approves of mother-son intercourse?"

"Whether I approve or not, I need to give a reason. The son's body grows and develops in the mother's womb, and then comes into this world through the mother's vagina. A part of the son's body returns to the mother's body to create pleasure—what's wrong with that?"

Ms. Chen's words surprised me greatly; I didn't expect her to have such open-minded thoughts! I sat to the side listening to Teacher Chen and my mother's conversation, unable to get a word in edgewise.

"If Teacher Chen had a son, would you have sex with him?"

"Unfortunately, I had a daughter, which is what I envy about Li's mother!" Teacher Chen then asked my mother, "Li's mother, would you be willing to have sex with your son?"

My mother glanced at me and said, "That depends on the situation. If it's like today, and my son doesn't object, I would."

Teacher Chen then asked me, "Li Tongxue, would you be willing to have sex with your mother?"

I looked at my mother, and she was looking at me tenderly. I replied, "I'm willing too."

Teacher Chen said, "It's clear that you and your son are of one mind! This was also proven in class today. Li's mother, when your son penetrated you, your vagina was fully lubricated, which proves that you were looking forward to his penetration. And Li Tongxue's ejaculation at the end proves that he enjoys having sex with his mother. Li's mother, how is your sex life with your husband?" "

Well... actually, my husband got prostatitis two years ago, and we haven't had much sex in the past two years."

"I see! Women who lack the nourishment of sex life will age very quickly! Li Tongxue, your mother's sexual happiness will depend on you from now on!"

My mother blushed and said, "Teacher Chen, please don't say that. He's just a student, and he's not even an adult yet."

"Mrs. Li, although your son is not yet a teenager physically, his body is already very well developed, isn't it? To be honest, even when my husband was at his best, his penis wasn't as big as his."

The mother said, "That's true, my husband's penis isn't as big as his either. Ms. Chen, how is your sex life?"

"To be honest, my situation is similar to yours in terms of sex life. My husband is often away on business trips abroad, and when he comes back, we rarely have sex."

"Have you ever thought about having an affair, Mr. Chen?"

"I'm a teacher, and I'm not the kind of person who's casual about sex. What about you, Mrs. Li?"

"Although my husband isn't in the best of health, he loves me very much, and I have a lovely son. I'm the kind of person who cherishes family happiness!"

Mr. Chen nodded and said, "I can see that Mrs. Li cares a lot about her husband and son. But if it were to have sex with your son, and your husband didn't object, would you do it?"

"Maybe... I would." The mother blushed again as she spoke.

The three bottles of beer were quickly finished, and Mr. Chen asked, "Want three more?" "

Mr. Chen, you can't drink anymore." The mother quickly stopped her, "I have to go to work this afternoon, and Xiaoming is still a minor, he can't drink too much."

"That's what I was thinking too, then let's eat!" Mr. Chen said.

I quickly got up and served Mr. Chen and the mother a bowl of rice each.

"Mrs. Li, next time I teach a sex demonstration class, I'd like to teach the students more sex positions and how to properly use condoms. Would you be willing to accept my invitation?"

I was really looking forward to my mother's acceptance. Mom thought for a moment, looked at me again, and then nodded, saying, "It's a great honor for me to be able to help the students!"

Teacher Chen smiled sweetly and said, "Mrs. Li is so kind! Could we do some pre-reading now?"

"What? Here?"

"Yes, right here."

Mom's face flushed red. She said, "Well… if Teacher Chen is willing to give a demonstration first, I can do some pre-reading."

Teacher Chen looked at me and then smiled, saying, "Mrs. Li, are you comfortable with me having sexual contact with the students of Li Tongxue?"

"Teacher Chen is old enough to be my son's mother, what do I have to worry about?"

Teacher Chen nodded, then turned to me and said, "Will the Li Tongxue think I'm too old?"

I never dreamed I could have sex with the most beautiful teacher in the whole school! This was such a surprise! But I was afraid that if I acted too enthusiastically, my mother would be unhappy, so I looked at her and asked, "Mom, is it okay?"

My mother nodded and said, "Xiaoming, you didn't behave very well this morning. Now, when you're with the teacher, you have to behave well!" As

soon as my mother said this, Teacher Chen called me over to her side. She first took off my pants, and then started to take off her own skirt. Soon, our lower bodies were completely naked.

"Mrs. Li, look how big your son's penis is!" Teacher Chen said, reaching out and grasping my penis.

"What does Teacher Chen plan to do?" My mother said, walking in front of us. Her gaze lingered on my penis.

Teacher Chen gestured for me to sit on a chair, then she faced my mother with her back to me, grasped my penis with her left hand, and gently sat down while separating her labia majora and minora with her right hand. My glans slid into a warm and wet passage.

The mother looked down and asked, "Teacher Chen, is it in?"

"Look, it's in! Your son's penis is so long, the head is practically touching my cervix."

The mother laughed. "I already felt it in class today. Teacher Chen, did you enjoy it?"

"Mrs. Li, we're just demonstrating sex now, whether it's pleasurable or not isn't that important, is it?"

The mother blushed. "Teacher Chen is right."

Teacher Chen moved her body up and down, saying, "But to be honest, young men's penises are different, so big and hard, it feels really good inside!"

The mother chuckled. "Teacher Chen, can sex demonstrations also produce sexual pleasure?"

"Sex demonstrations are still sex! This morning in class, your son's penis was inside your vagina, didn't you feel pleasure too? You even made such lewd moans!"

The mother blushed and didn't speak.

Teacher Chen manipulated it for a while, then stopped.

"Li Tongxue, now let your mother come up and have sex with you. I'll be your guide." Teacher Chen got off me. "Why isn't Li's mother taking off her skirt? Do you want your son to help you take it off?"

My mother quickly said no, and took off her skirt and underwear herself, exposing her entire lower body. My mother walked up to me and used the same position Teacher Chen and I had just used to insert my penis. She moved up and down and swayed from side to side. My mother's vagina was looser than Teacher Chen's, and there was more fluid inside.

"Li Tongxue, the position your mother is doing with you now is called 'Guanyin Sitting on a Lotus.' You can put your hands inside her clothes and caress her breasts."

I tentatively put my hands inside, and seeing that my mother didn't object, I boldly started playing with her breasts. However,
her clothes were in the way. I thought: It would be great if my mother took her clothes off too.

As if hearing my thoughts, Teacher Chen said, "Mrs. Li, take off your clothes too. It will make it easier for your son to caress you."

My mother hummed in agreement, sat on my penis, and took off all her clothes, leaving her completely naked. I happily kneaded and squeezed her breasts.

"Mrs. Li, isn't it great to caress and have sex at the same time?" Teacher Chen asked.

My mother nodded without speaking.

"Now turn around and have sex with your son in the same position!" Teacher Chen said. My mother obediently turned around, facing me and still sitting on my penis.

"That's right, like this," Teacher Chen explained, "This position is called 'Old Tree Roots.' Li Tongxue, you can suck on my nipples and caress her buttocks with your hands."

I did as Teacher Chen instructed.

My mother quickly let out a wanton moan, her eyes slightly closed, looking ecstatic, and my movements became even faster.

Teacher Chen quickly said, "Stop." Mom opened her eyes, puzzled. "Mother Li, you can't reach orgasm yet, you know? There are many more sexual positions we need to try."

Then Teacher Chen told Mom to get off me, put her hands on the chair, and let me penetrate her from behind. "This position is called 'riding and shooting arrows,' also known as 'doggy style.' In this position, the man can insert his penis very deeply."

I fucked Mom from behind, and this position gave me a sense of conquest, as if Mom had become a mare beneath me. Unfortunately, I only managed a few dozen thrusts before Teacher Chen told me to stop, which made me very unhappy.

Next, under Teacher Chen's guidance, Mom and I tried five or six more sexual positions. What I found most interesting was standing face-to-face with Mom. I'm ten centimeters taller than Mom, and with my penis inside her vagina, the head naturally penetrated deep into her uterus when I stood up straight.

Teacher Chen made us dance ballroom dances while having sex. My mother's dancing was very graceful. I wasn't good at dancing, but with my mother's encouragement, I actually danced quite well.

This sexual position was really lewd, and I quickly ejaculated under intense stimulation.

"Oh, Mom..." My semen shot directly into my mother's uterus, and then flowed out of her vagina and dripped onto the ground. I gasped for breath, feeling exhausted from the intense orgasm.

"Xiaoming, my good son." Mom hugged me tightly, stroking my face and buttocks with her hands. "Teacher Chen, my son ejaculated, can we stop now?"

"Ah, Li's mother, congratulations! This is Li Tongxue's virgin semen! Now you two separate,"

Teacher Chen separated my mother and me, then reached down to collect some semen from my mother's genitals, saying, "He ejaculated so much, this semen can help you have many children."

My mother looked at the semen in Teacher Chen's palm, her face flushed with embarrassment. She said, "Teacher Chen, I didn't expect him to ejaculate so quickly!"

Teacher Chen smiled and said, "Yes, Li's mother didn't even reach orgasm before he ejaculated, it's a bit of a pity! Li Tongxue, you have to work hard in the next sex demonstration class. It's a man's responsibility to satisfy his sexual partner, do you understand?"

Afterwards, my mother, Teacher Chen, and I got dressed and sat down to eat again. After the sex demonstration, my sexual technique had improved again. Although I've watched quite a few pornographic films, watching others have sex and experiencing it yourself are completely different things. Sexual intercourse requires practical experience!

And so, my mother and I finished this extremely lewd sex preparatory class. My only regret was
that I didn't bring my mother to orgasm.

Chapter Three: The Second Sexual Intercourse Demonstration Class

Back home, I tried to break the bond between my mother and me. But I quickly found it wouldn't work
. Every time I tried to get close to my mother, she would stop me with an unwavering gaze. I felt
extremely frustrated and could only look forward to the next sexual intercourse demonstration class.

A week later, Ms. Chen invited my mother and me again. We went to her office, and this
time she didn't ask me to go to another room to change, but instead took us directly to the classroom next door.

The moment we entered, the girls in the classroom clapped in unison; they seemed
to be looking forward to this sexual intercourse demonstration class as well.

Ms. Chen walked to the podium and announced to the class, "Today's lesson will cover two topics: one
is how to properly use a condom, which is very important for you; the other is the
common sexual positions. To make it easier for you all to observe, I'd like you to move your desks around."

All the girls moved their desks to the perimeter of the classroom. Ms. Chen then asked my mother and me
to walk to the open space in the center of the classroom.

"Mother Li, students Li, you can take off your clothes now," Ms. Chen said.

We quickly took off all our clothes. Although this was the second time
I had displayed my naked body in front of so many girls, I still felt a little uncomfortable; my mother seemed more at ease than I was.

"Now let's learn how to use a condom correctly," said Teacher Chen, taking
a small plastic bag from her pocket. She gently tore open the bag, showed the contents to the students, and said, "
Look, this is a condom. Does anyone know how to put one on?"

At this moment, a female student stood up and said, "Can I try?"

It was Wang, the somewhat mischievous student, who spoke.

Teacher Chen said, "Sure."

Wang took the condom from Teacher Chen and walked over to me. She put the opening of the condom on my glans
and then gently pulled it down. Since my penis was already erect, she quickly put the condom on for me.

"Teacher, did I do it right?"

Teacher Chen nodded and said, "You've done very well. However, before putting on a condom,
the man's penis should be fully lubricated, otherwise the man will lose his libido due to pain. Li Mama, could you
please demonstrate for the students?"

The mother nodded and said, "Okay."

So the mother walked up to me. Unlike Wang Tongxue who bent over earlier, she squatted down in front of me.
She gently removed the condom, then opened her mouth and sucked on my penis a few times before
putting the condom back on.

"Did the students see that?" Teacher Chen said. "Li Mama's demonstration was very good. Of course,
there are many ways to lubricate the penis; oral sex is just one of them."

At this moment, a student asked, "Teacher Chen, are there any other ways to put on a condom?" Teacher

Chen interjected, "Good question. Actually, you can also put on a condom with your mouth. Li Mama,
do you know how?"

The mother shook her head and said, "No."

"Alright, now I'll demonstrate how to put on a condom with your mouth."

Teacher Chen, like my mother, knelt down in front of me. She took off the condom, licked my penis
for a while with her tongue, then sucked on it. "Students, Li Tongxue's penis is now fully wet
. Next, you should carefully observe how I put on a condom with my mouth."

After saying this, Teacher Chen put the condom in her mouth, leaving the opening outside, pressing it
against my glans. She slowly swallowed my penis, and when she released it, the condom was
on.

A burst of enthusiastic applause erupted in the classroom.

Next was condom-wearing intercourse. Teacher Chen gestured for me to lie on the classroom floor. Because the floor was cold, she
suggested using the clothes my mother and I had taken off as a cushion.

After I lay down, Ms. Chen nodded to my mother. My mother didn't hesitate; she straddled me with one leg and
slowly squatted down. She grasped the base of my penis with one hand and gently stroked it a few times. With her other hand
, she parted her labia and gently sat down, placing her vaginal opening against the head of my penis.

All the girls in the class gathered around, watching intently, some whispering amongst themselves.

"It really went in."

"Won't wearing a condom affect the pleasure?"

Ms. Chen had clearly heard their discussion. She smiled and said, "Wearing a condom during sex will certainly affect pleasure,
but it's still necessary to ensure safety. If you don't want to have children,
you must insist that your partner wear a condom when you have sex."

"But you can take birth control pills!" said Wang Tongxue.

"All medicines have side effects, you understand?" Ms. Chen said somewhat seriously. "Taking too many pills
is very bad for your health, especially for teenage girls like you, you should avoid taking them."

While Ms. Chen was educating her students, my mother, sitting on my penis, looked very embarrassed, unsure whether to get off
or continue sitting.

"Mrs. Li can get off now," the teacher said. "Next is a demonstration of sexual positions."

After Mom got off me, Teacher Chen removed the condom from my penis and said, "Students,
Li's mother has an IUD, so we won't need to wear a condom for the following sexual demonstration. Therefore, you can see
the intimate contact between their genitals. You must observe carefully later, and you can ask any questions."

At this moment, Wang, a student from the same school, suddenly spoke up: "Teacher Chen, why did you insist on choosing Li's mother as Li's
sexual partner? Isn't incest between mother and son the biggest taboo of incest?"

I saw Mom's face turn bright red.

“Wang Tongxue, you need to understand that what we are doing now is a teaching demonstration, not actual sexual intercourse. Since Li
Tongxue is still a minor, the teacher needs his parents' consent to invite him to demonstrate. If we don't invite Li's mother to be
her son's sexual partner, then who should we invite?”

“Teacher Chen can do that too!”

“It's not impossible for the teacher to be Li Tongxue's sexual partner, but firstly, we need to get Li's mother's consent
, and secondly, the teacher also needs to act as an instructor, which is a bit inconvenient. Originally, the teacher wanted to hire a prostitute from outside
, but I'm afraid Li's mother wouldn't agree.” Teacher Chen nodded to the mother and continued, “
Actually, a son's body comes from his mother's vagina. After the son grows up, he can use the vagina that gave him birth to teach his son
how to have sex. What's wrong with that?”

“Then what is incest between mother and son?” someone asked.

"Incest is defined as any abnormal sexual behavior between a mother and son."

"Then what constitutes abnormal sexual behavior?" The same student from the same school asked again.

Teacher Chen pondered for a moment and said, "For example, adultery between a mother and son behind the father's back, or
the birth of a child with an incorrect generational order after sexual intercourse between a mother and son—those are examples of incest."

"Does Teacher Chen mean that as long as there are no children and it's not done behind the back of family members, it's not incest
?" This time it was that same student from the same school again.

Teacher Chen said, "That should be the case."

Wang Tongxue continued, "Then is it the same for fathers and daughters?"

Teacher Chen said seriously, "Sexual behavior between fathers and daughters is not as simple as that between mothers and sons
. Because a virgin's hymen is intact before she loses her virginity, if a girl loses her virginity too early, and her future
husband cares about her virginity, it could lead to marital unhappiness."

"So, mother-son sex only requires the father's consent, while father-daughter sex requires not only the mother's
consent but also the husband's? Isn't that unfair?"

"This world is inherently unfair. Okay, this lesson isn't for discussing ethics
. Now, please let Li's mother continue to demonstrate sexual intercourse for us."

Next, my mother and I demonstrated several sexual positions in front of the more than thirty female students in the class, even
demonstrating anal sex. To be honest, neither my mother nor I like anal sex. When I forced my penis into her
anus, she trembled with pain, which broke my heart.

Near the end of class, Teacher Chen suddenly announced, "Class, shall we have Li Tongxue and his mother
give us a full demonstration of sexual intercourse?"

A cheer erupted in the classroom.

I looked at my mother; she was already in position, just waiting for me to have sex with her. I
inserted my penis into her from behind. This time, it wasn't a mere demonstration, but a real, intense penetration.

To increase my mother's sexual stimulation, I thrust in and out while caressing her breasts
, thighs, and buttocks with both hands. My mother quickly became aroused; she couldn't help but moan loudly, her vagina
becoming increasingly wet, with vaginal fluid constantly seeping from the point of our genitals, wetting the classroom
floor.

"Teacher Chen, why is so much fluid coming out of Li's mother's vagina?" a student asked.

Teacher Chen explained, "This is vaginal fluid. When men and women experience pleasure during intercourse, vaginal fluid flows
out. Its purpose is to prevent damage to the vagina from vigorous thrusting. You see, Li's mother is on the
verge of orgasm."

Suddenly, I felt my mother's vagina convulse violently, and a gush of vaginal fluid sprayed onto my glans
. Immediately afterward, my mother's body trembled uncontrollably.

"Ah ah..." my mother let out a lewd sound.

"Students, look, this is a typical symptom of orgasm! Li's mother is probably experiencing an orgasm right now
; this is the happiest moment for a woman." Teacher Chen explained, then said to me, "Li, you performed
really well today. It would be even better if you could ejaculate inside your mother."

Before Teacher Chen finished speaking, I had already begun to ejaculate. I held my mother's legs tightly with both hands, and
stream after stream of hot semen shot deep into my mother's vagina. I thrust a few more times and then lay still on my mother's back.

"Wow, Li Tongxue ejaculated!"

"Look how much he's sweating!"

The girls around us whispered. Teacher Chen instructed me to pull out my penis so the girls could see my mother's
vulva, which had been penetrated.

"Look, this milky white fluid is semen. Li Tongxue's father
ejaculated inside his mother's vagina, and it combined with an egg released from her body to create him." "

Then, if Li Tongxue ejaculated inside his mother's vagina, could he also have a child?" someone asked.

"No," Teacher Chen said, "because Li's mother has already had an IUD inserted."

Then, Mom squatted down, letting the semen flow out of her vagina, before getting up and dressing. This
long-awaited sex demonstration class ended just like that. I had successfully fucked my own mother's cunt, and even
ejaculated my incestuous semen inside her vagina.

Chapter Four: Another Sex Demonstration Class

My several sexual encounters with my mother were all conducted in the presence of others. Although we
had had physical contact many times, and I had even brought my mother to orgasm, this did not change our
mother-son relationship. At home, Mom was still Mom, and I was still her son. I knew Mom treated me this way because she loved Dad. Dad was a retired soldier, a regimental-level officer

in the army , who was assigned to the Ren'ai Hospital as vice president after his discharge, and is now the hospital's president. 　　My mother was a nurse at this hospital, later promoted to head nurse, and is now the director of the nursing department. 　　My father is an honest and hardworking man. Under his management, Ren'ai Hospital has transformed from an insignificant little hospital into one of the most famous in the city, earning him the respect and admiration of all the staff. 　　My mother is much younger than my father, and he has always cherished her dearly. Since my father fell ill, perhaps out of guilt, he has become even more indulgent towards my mother. 　　I know that if my father approves of my mother and me, my mother will definitely accept me. I also know that if either my mother or I tell my father, he will not object. But how can I possibly say something like this ? 　　I feel helpless and can only look forward to the next sex demonstration class. However, I've run into Teacher Chen several times at school, but she hasn't mentioned this matter. I wonder if she will arrange such classes again? 　　This day, I ran into Teacher Chen again. I greeted her and was about to leave when she called me back. 　　"Li Tongxue, could you come to my office for a moment?" 　　"Sure," I readily agreed. I wondered if the teacher was going to arrange another sex demonstration lesson. 　　Teacher Chen had her own office, right next to her classroom. After I went in, Teacher Chen poured me a cup of tea. 　　"Li Tongxue," Teacher Chen asked, "has there been any change in your relationship with your mother lately?" 　　I knew exactly what she meant by "change," and said, "Nothing has changed!" 　　Teacher Chen then asked, "Li Tongxue likes your mother, right?" 　　I nodded slightly and said, "Yes." 　　"Li Tongxue, do you have a habit of masturbating?" Teacher Chen suddenly asked. After I answered affirmatively, she asked again, "How often do you usually masturbate?" 　　I said, "About once a day. Sometimes twice a day." 　　Teacher Chen's eyes widened, and she said in surprise, "My God! Don't you feel any discomfort from ejaculating so frequently?" 　　I said, "Maybe it's just a habit." 　　Teacher Chen said, "Masturbating so frequently isn't good for your health, but young people your age have particularly strong sexual desires, and it's not good to not release them. How about this, we..." Our school received an assignment today to recommend five male students to donate semen at a hospital. The specific method isn't clear, but I think since you're wasting your time masturbating anyway, donating to the hospital would be a contribution. Would you like to go?" 　　I said, "I'll listen to you, teacher." 　　Teacher Chen smiled and said, "I can't make this decision for you. Go home and ask your mother. If she's okay with it, then come and register with me, okay?" 　　I nodded at Teacher Chen. She looked at me with a beaming smile; her expression was just like my mother's. I suddenly had an urge to hug her. 　　"Teacher Chen," I called out, my voice trembling with excitement. 　　"Is there anything else, Li Tongxue?" 　　I said, "Nothing much, it's just...it's just..." 　　Teacher Chen chuckled and said, "Why are you suddenly so shy? Just say what's wrong, I won't blame you." 　　I composed myself and said, "I suddenly feel like Teacher Chen looks like my mother, am I being a bit inappropriate ?" 　　"Li Tongxue's mother is a great beauty! How can I compare to your mother?" 　　"No, Teacher Chen is beautiful too! All the boys at school want to be close to you." 　　"Li Tongxue, if I played the role of your mother, would you like to have sex with me?" 　　Without thinking, I said, "I would." 　　Teacher Chen chuckled and said, "I'm really happy that a young man is interested in me! 　　Wait here for a moment, I'll be right back in the classroom." 　　After saying that, Teacher Chen went into the classroom next door through another door in her office. She returned quickly, smiling at me, and said, "Li Tongxue, this class is a self-study period. I just asked the students for their opinions, and they said they wanted to give them a sex demonstration class. It seems the students really enjoy this kind of class." 　　I originally thought Teacher Chen would let me have sex with her in her office, but I didn't expect her to want me to participate in a sex demonstration class with her. I was a little surprised, but there was nothing I could do. I was always a little uncomfortable having sex in front of so many people in class , and the pleasure would be greatly reduced. Teacher Chen took my hand and led me into the next classroom. All thirty-odd girls in the class looked at us 　　expectantly . 　　"Classmates," she said, "it just so happens that Li, a student in our class, came to my office today. Since this is a self-study period, I've decided to give you a demonstration lesson on the importance of foreplay during intercourse. Because this lesson was a last-minute decision, I couldn't invite Li's mother, so I'll be demonstrating myself." 　　The whole class applauded enthusiastically. 　　Then, Teacher Chen and I took off our clothes and stood naked on the platform. 　　Teacher Chen walked up to me, took one of my hands, and placed it on one of her breasts, facing the whole class.

She said, "Sexual intercourse should begin with caresses. Li Tongxue can caress the teacher's breasts, that's right, like this."

Then Teacher Chen gestured for me to pull her into my arms. Her skin was smooth and delicate; the feeling of holding a beautiful woman in my arms
was truly wonderful. Teacher Chen brought her mouth close and began to kiss me, explaining as she kissed, "
Kissing is an important prelude to sexual intercourse. You can put your tongue into each other's mouths and suck on each other's tongues."

As she spoke, Teacher Chen put her tongue into my mouth, intertwining with mine. I
sucked on her tongue while my hands caressed her delicate body. After a while, I put my tongue into her mouth again.

While Teacher Chen sucked on my tongue, she reached out and gently stroked my penis.

"Wow! Li Tongxue's penis is so big!" several students exclaimed.

Ms. Chen withdrew her tongue, smiled, and said, "Not bad, that's the effect of caressing. But that's not
enough; it needs further stimulation to make it more fully erect."

After saying that, Ms. Chen squatted down, opened her mouth, and took my glans in, beginning to give me oral sex. She first sucked on
my glans for a while, then began licking my penis with her tongue. She licked very carefully, almost
covering the entire shaft. After licking my penis, she opened her mouth and swallowed my scrotum.

Ms. Chen's oral sex technique was even better than my mother's; my penis quickly became fully erect under her licking
.

"Look," Teacher Chen showed my penis to all the students, "Li's penis is
fully erect now. You can come up and touch it, and experience the hardness of a fully erect male penis."

So all the female students crowded around, and one after another they touched my penis. That
mischievous Wang once again opened her mouth and took my glans in, this time imitating Teacher Chen
.

"Alright," Teacher Chen continued, "You students have already touched it. A man's penis
is very firm when fully erect, which prepares you for the next step of intercourse. But the woman also needs to be fully lubricated
."

Next, Teacher Chen spread our clothes on the classroom floor. She had me lie on them, then she lay
on top of me with her head towards my genitals, saying, "The position I'm using now is called
69. Both partners can caress each other's genitals. Li Tongxue, you can
try licking Teacher Chen's vulva now."

So I stuck out my tongue and licked Teacher Chen's labia majora, minora, and vaginal opening. Teacher Chen also opened her mouth and
took my penis in, giving me oral sex.

All the girls in the class gathered around; some were observing how Teacher Chen licked my penis,
while others were watching how I licked Teacher Chen's vulva.

"Wow! Teacher Chen's private parts are leaking fluid!"

"Li Tongxue, can you put your tongue inside Teacher Chen's vagina?"

I tried to put my tongue in, scraping the inside of Teacher Chen's vagina with the tip.
Some more vaginal fluid flowed out of Teacher Chen's vagina, getting all over my face and mouth.

At this moment, Teacher Chen spat out my penis and said to the students, "Teacher's vagina is fully wet,
and Li Tongxue's oral sex technique is not bad, but Li Tongxue, you should also lick Teacher Chen's clitoris. The clitoris is
the most sensitive sexual organ of a woman."

So I started licking Teacher Chen's clitoris again. This was indeed the most sensitive place on Teacher Chen's body, and
Teacher Chen quickly let out a moaning sound.

"Teacher Chen," Wang Tongxue spoke up, "what does it mean when you make those 'ah ah' sounds?"

Teacher Chen replied, "That's what I call a lewd moan. Women make these
sounds when they experience sexual pleasure. I'm a woman too, and my clitoris feels so good being licked by Li Tongxue, so I can't help but make these slightly
vulgar lewd moans."

"So, Teacher Chen, are you looking forward to having sex with Li Tongxue?" another student asked.

"That's right, Teacher's inside is already a little itchy. Now, Teacher will demonstrate sex." Teacher Chen
got up and sat on my lower body. Just as she was about to use her vaginal opening to stroke my penis, Wang Tongxue spoke again.

"Teacher Chen, wait a minute. What would happen if you didn't have sex with Li Tongxue right now?"

Teacher Chen said, her vaginal opening pressed against my glans. "Teacher Wang, that's a good question. If
we stop now, I'll be miserable all day. Once a woman's libido is aroused, she'll crave it intensely."

With that, Teacher Chen sat down, her vagina swallowing my entire penis.

Her body heaved up and down, the movements becoming faster and faster. Because she was facing me, I could clearly
see my penis going in and out of her vagina.

"Ahhh..." Teacher Chen couldn't help but let out another extremely lewd moan. "Students, look, when a woman
is aroused, a man's penis thrusting in and out of her vagina makes her feel incredibly good."

Then Teacher Chen had me lie on top of her, her legs wide open, allowing me to insert my penis and thrust. I
thrust over a hundred times in one go, making her moan incessantly. The surrounding students stared in disbelief, perhaps because
they hadn't expected Teacher Chen to behave so lewdly!

I thrust vigorously for a while longer, and Teacher Chen cried out "Ah ah..." her vaginal walls convulsing
, a gush of vaginal fluid spurting out. I knew she had reached orgasm.

So I slowed down my thrusting, and gradually Teacher Chen recovered from her orgasm. She smiled and said
, "Students, just now, Li Tongxue brought me to orgasm, but Li Tongxue hasn't ejaculated yet. This
isn't good for Li Tongxue's health, so Li Tongxue can continue thrusting until ejaculation."

Teacher Chen changed her position, getting on all fours, her snow-white, pink buttocks raised high towards me, and
said, "Li Tongxue can enter from behind."

I spread Teacher Chen's legs apart with my hands, and with a thrust of my penis, I shoved it inside.

"Teacher Chen," a student asked, "will you experience a second orgasm?"

Teacher Chen replied while responding to my thrusts, "Many women do experience a second orgasm,
but I have never experienced it before."

The female student said to me again, "Li Tongxue, you'd better try your best! Make Teacher Chen reach
orgasm again."

I smiled a little shyly and said, "I'll do my best."

All the female students applauded for me, and some even shouted "Go, Li Tongxue!"

I controlled my urge to ejaculate and started fucking the teacher again in that doggy-style position. As I fucked her
, I lowered my body and kneaded Teacher Chen's breasts with both hands.

"How does Teacher Chen feel now?" a student asked.

"Oh, Teacher's inside is a little itchy again. Li Tongxue is really young, it's really
good that you can last so long!"

Encouraged by Teacher Chen, I thrust even more vigorously. After a few hundred more thrusts, Teacher Chen's
vagina twitched again.

"Ah... Li Tongxue is so good... Teacher is having another orgasm... Ahhh... I can't take it anymore... Teacher can't take it anymore..."

"What does Teacher Chen mean by saying she can't take it anymore?" Wang Tongxue asked.

Teacher Chen said with a flushed face, "Teacher didn't expect the second orgasm to be so intense, Teacher's
body is about to fall apart... Ahhh... Li Tongxue, hurry up and cum... cum for Teacher... Ahhh..."

Teacher Chen's lewd appearance stimulated my nerves once again. I rubbed Teacher Chen's nipples hard, and my
penis quickly fucked Teacher's cunt. I shouted and ejaculated inside Teacher's vagina.

"Wow! Teacher Chen, Li Tongxue ejaculated so much inside you!"

Teacher Chen squatted down, letting the semen flow out of her vagina. Her face flushed, she said, "I was a little
out of line just now, please forgive me. But today's orgasm was the most intense I've ever experienced
. Li Tongxue, thank you for giving me such a wonderful orgasm experience."

At this moment, Wang Tongxue spoke up: "Teacher Chen, you're having a great time, but we're suffering!"

Teacher Chen finally recovered from her orgasm, and said in a somewhat serious voice, "You're still
virgins, you can't easily lose your virginity, you know?" Teacher Chen hesitated for a moment, then said, "Which of you are
suffering? How about this, let Li Tongxue lick you with his tongue, maybe that will make you
feel better."

I looked at Teacher Chen in surprise. Did she really want me to perform oral sex on so many girls?

"Li Tongxue, today might be tough for you. If you're willing, I'll allow you to have sex with me one more
time, okay?"

Could I say no? Of course, I readily agreed. So, about twenty female students took off
their skirts and panties, and they sat one by one on the chairs, legs spread, waiting for me to give them oral sex.

I started with the first girl, licking their labia with my tongue, teasing their clitoris with the tip of my tongue, and
sometimes even inserting my tongue into their vaginas. These female students were all only fifteen or sixteen years old, their vulvas were all pink
and tender, some with sparse pubic hair on their mons pubis, and some with no pubic hair at all,
completely bald.

I secretly compared their vulvas to my mother's and Teacher Chen's. If it were just oral
sex, these girls' vulvas would taste better, but if they were for intercourse, my mother and
Teacher Chen, being mature women, would be more pleasurable.

Halfway through my licking, the bell rang. Teacher Chen said those who wanted to go home could go, and those who wanted to stay
could attend make-up classes. Our vocational school had a rule that if a student couldn't complete their normal credits
, they could earn extra credits through make-up classes, up to a maximum of five. Therefore, after Teacher Chen's announcement, all the students
stayed; not a single one wanted to go home.

I finished giving oral sex to the remaining girls in one go, feeling my tongue go numb, as if it wasn't my own
. But seeing the girls' satisfied expressions, I felt an indescribable sense of pride.

At this moment, Teacher Chen spoke with a smile: "Are you all satisfied? Wasn't Li Tongxue's oral sex technique amazing
?"

"Yes, Li Tongxue's oral sex technique is really amazing," Wang Tongxue said. "But Li Tongxue's sexual
intercourse technique might be even better! Don't you think? The fact that she brought Teacher Chen to orgasm twice is enough proof."

Teacher Chen's face darkened. "What do you mean by that, Wang Tongxue?"

Wang Tongxue stuck out his tongue and said, "Teacher Chen, I didn't mean to offend you, but I'd like to
give Li Tongxue a sexual intercourse demonstration. Is that alright?"

Teacher Chen said, "No, you're still virgins. How can you just lose your virginity like that?"

"Teacher Chen, I'm not a virgin anymore, so isn't that fine?"

Teacher Chen said, "Even if you're not a virgin anymore, you still need your parents' consent."

I thought to myself: I doubt any parents would agree to this. Teacher Chen was clearly making
things difficult for Wang Tongxue! To be honest, while Wang Tongxue wasn't the most beautiful among all the girls in the alley, she was still top-notch. Plus
, her charming and mischievous personality was right up my alley; it would be
great to have sex with such a beautiful girl.

Seeing Teacher Chen's tone growing increasingly stern, Wang Tongxue raised her voice, not to be outdone, and said, "My
parents divorced a long time ago, and neither of them cares about me. I decide my own affairs. Teacher Chen, is it because
you like Li Tongxue that you're holding back with me?"

I looked at Teacher Chen with some worry, thinking she was about to explode. Teacher Chen did indeed
seem a little angry; her face flushed red and then turned pale, as if she wanted to devour Wang Tongxue whole.

But a teacher is a teacher; she quickly calmed her anger and said calmly, "Since
Wang Tongxue insists on having sex with Li Tongxue, I don't object. However, you need me to check
if your hymen is really broken."

Wang Tongxue said, "Check it then, do you think I'd lie to you?"

So Wang Tongxue sat on a chair with her legs spread apart, and Teacher Chen squatted in front of her, spreading her labia majora and minora
and examining her carefully.

"Not bad, Wang Tongxue's hymen is indeed broken. Okay, if Li Tongxue is willing, you two can
do a demonstration of sex, but you must use a condom."

Of course I wouldn't object, even though I'd already ejaculated inside Teacher Chen's vagina. But with
a pretty girl like Wang Tongxue letting me fuck her, I wouldn't refuse.

At Teacher Chen's suggestion, I lay down on the floor, and she personally put a condom on me
before telling Wang Tongxue it was okay. Wang Tongxue straddled me confidently and quickly inserted my penis
into her vagina. Wang Tongxue's vagina was much tighter than Teacher Chen's or my mother's. Luckily,
when I gave her oral sex, it was already quite wet, and it was obvious she wasn't a virgin
. So, when my penis was fully inserted, although it felt a little tight, she didn't seem to feel any discomfort.

While Wang Tongxue and I were having sex, all the other students were watching. Several students were even asking Wang
Tongxue what it felt like to have sex with a boy. Wang Tongxue moved her body up and down, chatting and laughing with her classmates
.

After about ten minutes, Wang Tongxue started to feel the strain.

"Li Tongxue," Teacher Chen said from the side, "Now get on top of Wang Tongxue, she seems
about to climax."

I flipped over and pinned Wang Tongxue beneath me, thrusting my penis vigorously. Soon, Wang Tongxue began to moan
, her whole body trembling. Her climax seemed unusually intense; she cried out "Ahhh..." until it
turned into sobs.

I had never encountered anything like this before, so I stopped, looking at Teacher Chen somewhat bewildered.

Teacher Chen said it was alright, you can continue fucking her, she's enjoying it too much.

I fucked her for a few more minutes, then Wang Tongxue said no more, I couldn't take it anymore, and Teacher Chen finally let me off her
.

"Li Tongxue, do you still want to ejaculate?" Teacher Chen asked me.

I said, "So what if I want to ejaculate? Wang Tongxue is already like this."

Teacher Chen laughed and said to me, "Wang Tongxue is naturally no good. If Li Tongxue wants to ejaculate, Teacher
will let you do it again."

I was a little surprised and said, "Teacher Chen, you've already reached orgasm twice. Can we do it again?"

Teacher Chen chuckled and said, "That's the difference between a young woman and a girl! Wang Tongxue is still
young, and her body hasn't fully developed, so she can't handle too much stimulation. But Teacher is different.
After resting just now, my body has recovered. You can try inserting it if you don't believe me."

Teacher Chen wasn't wearing any clothes, so she lay down on the ground and spread her legs, waiting for me to fuck her. I bent down
and was about to penetrate her when Teacher Chen stopped me. "Li Tongxue, take off the condom. Teacher doesn't like
having sex with a condom on!"

I then realized that I was too hasty, so I took off the condom, and thrust my penis in. Mature women
are different; you don't have to be gentle with them, you can do whatever you want with them. And Ms. Chen
is about the same age as my mother, so having sex with her feels like having sex with my own mother—it's incredibly exciting.

This time, Ms. Chen and I reached orgasm around the same time. After the orgasm, we realized it was
already very late, and all the girls in the classroom had left. I lay on Ms. Chen's naked body, gently caressing
her breasts, thighs, and buttocks, my penis still inside her vagina, reluctant to leave.

"Li Tongxue, you can get down now."

"Teacher Chen, if I still want to have sex with you, will you object?"

"Didn't I promise to give you another chance to have sex with me? But from now on, unless it's for a sex
demonstration class, I won't have sex with my students casually."

I said, a little disappointed, "Teacher Chen is just like my mother. Doesn't the teacher enjoy having sex with me
?"

Teacher Chen gently kissed my lips and said, "Silly child, Teacher Chen is
just like your mother, you make her feel very good, but one is your teacher, and the other is your mother,
what else can we do?"

Teacher Chen asked me to help her up. When she got up, my semen was still flowing from her vagina, but she didn't care, she
didn't even wipe it away, and put on her underwear and skirt, then helped me put on my clothes.

Back home, I asked my mother if I could participate in the school's sperm donation activity. My mother said that sperm donation is also a public welfare
activity, and since it was organized by the school, I could participate. So the next day I went to Ms. Chen's office again
and told her what my mother had said. Ms. Chen had me fill out a form and told me to take it home and have my mother
sign it.

I took the form and whispered, "Ms. Chen, could we do it again?"

Ms. Chen smiled and said, "I promised to do it to you once, and I will definitely do it. But yesterday you made me
reach orgasm three times, and I haven't fully recovered yet! In a few days, when I'm fully recovered
, I'll let you have your way, okay?"

Hearing Ms. Chen say that, I naturally couldn't object, so I took the form and went home.

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