Something happened in physiology class

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During that biology lab, the teacher said she wanted to look at male sperm cells! (I don't know what she was thinking). She wouldn't let us bring them from home, saying the sperm would be dead by then, and we had to come to school to get them. She even brought some pornographic magazines from her husband's place.

Every boy in the class was passing the buck, nobody wanted to go. My group was the worst off because I was the only guy in my group (three diagonal lines), so I had to go. With four girls watching, how could I refuse? One of them was the group leader, Lingxuan. She was the type of girl who got good grades but was very talkative and nosy, wearing thick-rimmed black glasses.

She told me to hurry up and not cause trouble for the group. I thought to myself, "This isn't something that can be rushed, sis! Why don't you do it yourself!" I still grumbled and took my books to the bathroom. When I got there, I was dumbfounded! The restroom was full, so I had to go to one that was farther from the lab. Once inside, I opened a book, and immediately realized that porn was far more exciting than any book. The book held no sexual interest for me.

The restroom was eerily quiet, almost deserted. Then a couple entered. The man said, "There shouldn't be anyone here, right?" The woman replied, "Bringing someone here, you're such a bad person!" I immediately recognized them as Ahua and Mengxuan from my class. They chose the stall next to mine, and I didn't dare make a sound. They were incredibly bold, making love right there next door. Mengxuan kept moaning. Since they were a couple, they could use this method to collect sperm (menstrual blood),

while I was risking my life to travel to the West! But this is great! I can use this opportunity to collect semen. I wish I could see it, but no matter how I crouch down, I can only see the four-cornered beast's feet. I can only rely on my imagination. What excites me is that they are right next door. The wooden wall is constantly pounding and vibrating, showing how intense it is.

I'm already erect. I really envy them. The wall is vibrating more and more intensely. It seems that Ahua is almost there. Mengxuan panted, "Ah... Hua... no... ah... don't do that to me anymore... today... is my... dangerous period... I can't do this... I'll... get pregnant... ah... I'll use my mouth... to help you... please stop inserting it... it's so bad..."

Mengxuan's moans are so sexy! She's beautiful and has a curvaceous figure. Later, the wall vibrated twice more before stopping. I heard the sound of saliva slurping. I think Mengxuan was giving him oral sex! I didn't dare make a sound. After a while, there was a sudden noise that

startled the three people in the bathroom. It was the group leader, Lingxuan. She shouted, "Jincheng! Are you done yet? We've been waiting for so long!" Her shout startled Ahua and Mengxuan even more. I pretended not to know anything and replied, "Not yet! Your shout made me shrink back!" (I really did go limp.)

The two of them realized that the voice was coming from next door. "That was just now..." The two of them remained silent. Lingxuan said again, "What should we do? The teacher is urging us!" I said, "There's no other way! Come in and help me." Lingxuan paused for a moment and replied, "How can I help?" The three of them were a little surprised, wondering why I would say such a thing.

I said, "Come in first and we'll talk!" I opened the door and tried to pull Lingxuan in, but Lingxuan was shy. I deliberately spoke loudly, "There's no one here, what are you afraid of!" The bathroom wasn't too crowded, and there was still room to maneuver. Lingxuan said, "Let's make a three-point agreement first. You absolutely cannot touch my body, or I'll accuse you of sexual harassment."

I listened carefully to Ahua and Mengxuan next to me. They obviously wanted to stay and hear what we were going to do, otherwise they would have taken this opportunity to go back to the lab long ago. I didn't hide anything. Lingxuan said, "Okay! So how can I help you now?" I joked, "Can you let me see..." "Where's your naked body?"

Lingxuan slapped me lightly. "Vulgar!" I laughed and said, "Just kidding!" Lingxuan said seriously, "Hurry up!" I thought for a moment and said, "Then you can strike some sexy poses!" Lingxuan asked, "How? I don't know how!" I showed her a pornographic magazine. When

Lingxuan saw the naked men and women in the book, she blushed with embarrassment. I said, "Hey! What's wrong? Hurry up!" It was the first time Lingxuan had been forced to strike such a seductive pose, and she became shy on the spot, but she had no choice but to do it. Although her movements were clumsy, she still managed to strike a pose.

Actually, if you look closely, Lingxuan is quite pretty, she just doesn't know how to dress. Her beautiful face was covered by glasses. I said, "This isn't sexy enough. Unbutton your shirt a little." Lingxuan blushed and unbuttoned it one button. I became firm and said, "Not enough! Not enough! Unbutton it another button." Lingxuan did as I said.

I could already see her cleavage. I said, "Just one more tab." Lingxuan obediently unzipped it another tab. For some reason, Lingxuan, who is usually very fierce, suddenly became shy and timid. I like girls like her. It was as if our roles had been reversed at this moment, and I was in control. I could

see Lingxuan's bra. She was wearing a plain white bra. Her breasts were so big that I was surprised. How did she usually hide them? Her breasts looked at least a D cup or larger. I joked, "You've taken good care of them!" Lingxuan lowered her head shyly. Looking at Lingxuan's big breasts, I was already very hard.

I took out my penis and started fucking! Lingxuan stared at my penis with one eye open and one eye closed, seemingly a little frightened. I guessed she had never seen a man's genitals before, and I also guessed she was still a virgin. I said, "Squeeze your cleavage, it'll make it even better!" She timidly bent down, squeezing out a large cleavage.

I was incredibly excited, but the more excited I got, the harder it was to ejaculate. My penis was too hard, and after a while, it still hadn't come out. My hand was getting sore. I said, "This won't work. My hand is already sore before I even come out. Can you help me?" She was startled and said, "I don't know how!" I said, "Just hold it tightly and stroke it back and forth like I just did! Come on!"

She squatted down, touched it fearfully, and then pulled back. I grabbed her hand and guided it to my penis. I said, "Don't be afraid! Just take good care of it." Lingxuan slowly grasped it and began to stroke it. At this point, Lingxuan didn't know that her breasts... My breasts were almost completely exposed.

From my angle, I could see everything clearly. They were enormous, my bra could barely contain them. And those were the difference—a girl's hands were so smooth and soft, like a young girl's vulva. I was about to lose control, but I held back. I wanted to take advantage of her one last time;

I knew I wouldn't have another chance like this. I deliberately pulled her hand away and said, "Looks like it's still not working!" Lingxuan panicked, "What should we do?" I said, "I have a way that will definitely work." Lingxuan asked, "What is it?" I said, "I'm too embarrassed to say!" Lingxuan said, "Tell me! What time is it?"

I said, "Then promise me you'll help me." Lingxuan said, "Okay! Okay!" Afraid of making her angry, I stammered, "You...you...suck my...inside...with your mouth." Lingxuan hesitated for a moment, but then said seriously, "Will that work?" I thought to myself, this woman is so easy to fool!

I showed her some pornographic magazines and told her that it would only be effective if she swallowed and spat quickly like this. Lingxuan said, "Mmm!" as if she understood. And so, her first time was about to be given to this stinky man like me. She was still a little scared and opened her mouth slightly. I said, "Open it wider, otherwise it won't go in. Remember! Once it's in, you have to hold it in properly!" Lingxuan nodded,

and she slowly swallowed my penis. Although my penis was already in her mouth, she hadn't closed it yet, and I could already feel the heat in her mouth. When she completely took it in, that moment was truly amazing! Although she couldn't swallow me whole, the warm, sticky fluid, the narrow walls of her vagina, and her constantly moving tongue were incredibly exciting. People say oral sex is more pleasurable than intercourse, and it seems that's true.

I said, "Move! Otherwise, it's useless!" Lingxuan's swallowing and spitting, her sticky saliva, filled my entire penis. Because of the lubricant, my movements became faster and faster. I couldn't hold back any longer. I grabbed her head and started moving my hips, thrusting back and forth violently. Lingxuan was startled by my actions and tried to escape, but I held her tightly.

In just a few thrusts, I ejaculated into her mouth. She choked a little and quickly spat it out. I got her a container to collect it, and as soon as she spat it out, she exclaimed, "What are you doing?!" I said, "This is a normal reaction for a guy when he's about to ejaculate!" She stared blankly at the semen she'd vomited, as if it were the first time she'd ever seen it.

The toilet reeked of a fishy stench, and there was quite a lot of it. After we got dressed, we rushed back to the classroom. Lingxuan specifically reminded me, "Don't tell anyone about what happened today!" I promised. Not long after we got back to the classroom, Ahua and the others came in. They got scolded by the teacher, but later, when they examined my sperm cells, they found they were swimming quite fast. I really have to thank Lingxuan for her help. We both smiled at each other!
[The End]

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