Junior High School Physics and Chemistry Class (21)

Word count: 10054
Junior High School Physics and Chemistry Class (Twenty-One) My junior high school cram school classmate, Li Fa, is a girl who is quite strong in some ways. Otherwise, she would have to fly to the United States for treatment every time she falls ill, spending little time with her family, and often being trained in sexual techniques by her American aunt who is a medical doctor. Most people would have collapsed long ago. Although she took off all her clothes and pants the first time we met and demonstrated her super technique of making people ejaculate without even touching her vagina, I know that she is still pure at heart. From her love for small animals and her scheming to help me when she knew I liked the teacher, even if it meant having sex in front of her classmates, I know how kind she is. Li Fa was originally prepared to die, even if she was penetrated by those two bastards, she would still interrupt Teacher Li Zhenzhen's intercourse with them, so she raised her hand to join the demonstration; I didn't expect that I would painfully give up the opportunity to save the teacher, and instead I became the one demonstrating the phenomenon of incident ray deflection to her. She felt a little relieved, after all, having sex with strangers requires great courage. Doing that kind of thing with someone I know is always a bit more comfortable, no matter what. But it's still a shameful thing, so Li Fa tried not to guess what the other students thought, focusing only on my demonstration and keeping her eyes glued to me the whole time. Just after Cheng Yixin reminded me to enter the medium, I was afraid that people would find out about my good relationship with Li Fa, which would affect her interpersonal relationships, and I was also afraid that if she had another chance to speak, the classmates would have something to say. In less than a minute, I had already roughly inserted my glans into Li Fa's vagina, but I hadn't started thrusting yet, because I was afraid Li Fa would feel pain. But unexpectedly, although Li Fa's vagina was tight, it secreted natural lubrication, so even though I hadn't had foreplay, I didn't feel any discomfort from friction. Li Fa only frowned slightly when the largest part of my glans passed through her vaginal opening, and then resumed her usual half-smile, staring at me with wide eyes, occasionally whispering a few words unrelated to the lesson. "Are you alright?" To avoid giving anyone cause for gossip, I almost instinctively buried my glans into Li Fa's vagina. Although I instantly found the entrance and successfully ejaculated because I had sex with the teacher, I still felt quite guilty. However, confirming that Li Fa wasn't a virgin also left me with a slight sense of loss. "How about you? Are you alright?" Although Li Fa had been shamefully penetrated by my penis in front of the whole class, she didn't seem to care about her own situation, but instead showed understanding by caring about my feelings. "Me? I'm fine. What's wrong with having sex with a stunningly beautiful woman?" To cheer Li Fa up, I deliberately concealed my inner pain, making her think I was a lecherous bastard, so it wouldn't be too embarrassing for her, and she wouldn't feel sad for me. "Don't talk nonsense. This isn't sexual intercourse. Sexual intercourse isn't based on legitimate purposes. Our genitals are joined for legitimate teaching activities." Li Fa stared intently into my eyes, trying to convince me not to have too many fantasies about her body. However, her cheeks, which hadn't turned red when my penis was inserted, were now flushed. Although only the tip of my penis was inside Li Fa's vagina, I felt increasingly wet, hot, and numb because of Li Fa's adorable and proud attitude, as well as her truly alluring and fit body. I really wanted to penetrate her completely and truly possess Li Fa, to fuck her until she couldn't take it anymore!
"Actually, you don't need to do that." Li Fa's slightly angry expression softened into a gentle smile. She knew that although I had been joking and arguing with her, I genuinely thought she was very beautiful. "Since there are two demonstrations, everyone should watch carefully and familiarize themselves with a few special angles in junior high school." As soon as the teacher spoke, I naturally turned my head to see what she was saying, but my penis was reluctant to leave Li Fa's body. "In a moment, please have Chen Jianian demonstrate the thrusting at angles of incidence of 0 degrees, 30 degrees, and 60 degrees. Please roughly calculate the ratio of the refractive index of the vagina to the refractive index of air. The refractive index of air is actually very close to 1, so you can calculate the refractive indices of the teacher and Li Fa separately. The one closest to the correct value will receive a small gift." Although the teacher had already had sex with two students in public at the same time, she still subtly omitted the word "vagina" before the refractive index. My God, she wanted students to calculate the refractive index of her vagina, and even tested it with her penis. That's too awesome! The teacher displayed a table of sin values for trigonometric functions on the electronic whiteboard, making it easy for us to look up the values later. After saying this, she casually returned to her previous position, and then, as if to feed Tang Chenwei's eagerly awaiting young bird, she placed the student's long-awaited, thick penis into her vagina. "Like this, the angle of incidence of the penis is 30 degrees. Its position inside the vagina is approximately here. The angle between the angle and the pubic hair (which is the normal) is approximately like this. Please use Snell's Law to calculate." The teacher shamelessly allowed Tang Chenwei's penis to penetrate deeply, then stopped, allowing the students to calculate the angle values. She then assumed a seductive pose, legs spread wide, squatting down and straddling the student's penis. Seeing the teacher wearing a corset revealing her breasts, and the engorged clitoris and Tang Chenwei's penis vaguely visible through her pubic hair, my own penis couldn't help but grow larger, ignoring the tight embrace of Li Fa's girlish vagina, expanding outwards a little further. I was even a little afraid that I might loosen Li Fa's vagina. Almost the instant I reached another level of excitement, Li Fa let out a muffled groan. It was then that I realized the teacher's sexy figure wasn't meant for me; the penis inside her vagina belonged to Tang Chenwei, while mine was inside a kind and lovely young girl. If I were still distracted, I would be doing Li Fa a disservice. So I finally turned my head back. Just like Master Haitao said, it was all an illusion; the more you cling to it, the more painful it becomes. Did my constant wish for the teacher not to be touched by classmates really mean she wouldn't be fucked by Teacher Cai at home? Would she not be sexually harassed by Jiang Wangcheng at the tutoring center? I should focus on Li Fa. Even if I couldn't bring her pleasure, I should at least minimize her shame and calculate the most accurate refractive index. My penis had been inside Li Fa's vagina for so long; she should be used to my size by now. So I pulled out my penis, pressed the glans against Li Fa's vulva, and planned to re-enter at a 30-degree angle to her pubic hair, then calculate the refractive index of Li Fa's vagina based on the angle of deflection. "Time to insert," I whispered to Li Fa. She seemed to be mentally preparing herself, swallowing simultaneously with me. Seeing the person about to penetrate her and herself both trembling with fear, Li Fa and I exchanged a knowing smile. The tense atmosphere eased slightly, and I gently re-entered Li Fa, carefully observing whether the angle of entry met the 30-degree requirement. My penis deflected slightly after entering Li Fa's vagina. Because of this focused attention, I carefully examined Li Fa's genitals again, deeply feeling that her pink vulva was almost otherworldly beautiful. "Next, Chen Yuhao's penis will enter at a 30-degree angle." The teacher explained the purpose of each movement clearly, but it sounded inexplicably grating to my ears. However, the teacher's voice was immediately interrupted: "Teacher, I think my grades in the last midterm exam weren't ideal, so I should participate in the demonstration. Chen Yuhao's grades are so good, could he be in my group and teach me?" Unexpectedly, it was Zhen Shuzhu who spoke! Even though most of the classmates had guessed that their relationship was unusual, after all, they went to different schools and couldn't be sure about it—Zhen Shuzhu was from Hongren Girls' High School, Chen Yuhao was from the University of Georgia Affiliated High School, and most of us were from Minxiong Junior High School, but none of us knew that they were actually boyfriend and girlfriend, let alone that they had already tasted the forbidden fruit. Now, Zhen Shuzhu meant that she wanted to make a genital-to-genital connection with Chen Yuhao in front of everyone. Of course, other classmates might simply be questioning why she was being so proactive, but most people should be certain that they were boyfriend and girlfriend. With this relationship so obvious, Zhen Shuzhu's actions were simply to prevent Chen Yuhao from having the opportunity to cheat on her under the guise of attending class. His penis should return to the embrace of Zhen Shuzhu's vagina, instead of being used to penetrate the teacher. "Okay, then Chen Yuhao, you and Zhen Shuzhu are in a group." The teacher's vaginal opening was already in contact with Chen Yuhao's penis, but after Zhen Shuzhu spoke, the teacher straightened her body and did not allow Chen Yuhao's penis to continue entering her vagina. Chen Yuhao showed a wry smile, but since his nominal girlfriend Zhen Shuzhu had made this request, he had no excuse to object. He stood up with his thick penis erect, glanced enviously at Tang Chenwei, smiled, and then stood on the left side of the classroom, in the aisle near his original seat. Zhen Shuzhu quickly took off her lower body clothes, put her hands on a table, and let Chen Yuhao enter her body from behind. Damn, anyone who didn't know better would think they'd stumbled into a sex extravaganza! In front, a teacher in a vest was riding a student, while behind him, an icy beauty and a perennial exam-taker were engaged in bestiality (why am I even describing myself like this?). In the hallway, two prominent figures from private high schools were having an "inter-school exchange," using completely different positions! On my side, I was being penetrated in the missionary position by Li Fa's pink hole, while Zhen Shuzhu was being fucked like a bitch by Chen Yuhao, and the teacher was riding Tang Chenwei with her big breasts swaying. Even though Huang Ruoli had already ejaculated once, if he were allowed to masturbate freely, I think he'd be dead from exhaustion today! I glanced at Zhen Shuzhu's side and thought, "It's great that boyfriends and girlfriends can openly have sex in class." And Chen Yuhao had already forgotten his annoyance at being interrupted halfway through with the teacher, and was now diligently serving Zhen Shuzhu, completely ignoring any refraction issues. I also thought that if it weren't for the age difference between me and the teacher, it would be incredibly satisfying to openly have sex with the girl I liked in class. Only one bastard who laid a hand on the teacher remained. Although I was still heartbroken, I felt slightly better. After all, Tang Chenwei was still relatively innocent; the only person he had ever slept with was his own mother, Sister Yu. It seemed alright that the teacher was using him to soothe his wounded heart. I stopped thinking about it too much. "Let's go in." I gently pushed with my waist, watching my glans slowly disappear between Li Fa's pink organs. "Where is it roughly?" I asked, looking into Li Fa's eyes as I stopped my waist movement. "Roughly here." Li Fa leaned back slightly, gesturing to her lower abdomen. Li Fa was thin, but she had plenty of curves. Her C-cup breasts were far larger than the average middle school girl's, and her long legs and buttocks were muscular from riding her bicycle to school every day. The lines on her lower abdomen looked very healthy and sexy with the slight tilt of her back, offering some solace to my wounded heart. "Again." Although my penis was immersed in the warmth and moisture of Li Fa's vagina, just staying inside her vagina without doing anything was still unsettling. So I slowly pulled out my huge penis until the red and purple glans left Li Fa's body, and then entered her vagina again at a 30-degree angle, enjoying the indescribable tingling sensation. At a 30-degree angle, I could already feel a lot of lateral force, but Li Fa's vagina was so tight that my penis almost completely straightened after entering, leaving only a slight bend. I memorized the number. "Next, 60 degrees." Entering the vagina at this angle was already quite difficult. If it were a big but improperly sized, hard-to-fill penis like Huang Ruoli's, it might even be difficult to enter the vagina. "Hehe, you're really calculating so seriously." Seeing my expression as I occasionally became engrossed in mental calculations and occasionally carefully inserted my penis into her body, Li Fa couldn't help but smile, frowning as she smiled. "I must get the little gift!" I inserted the head of my penis into Li Fa's vagina, telling her to shut up and help me calculate, hoping our group's number would be closest to the ideal value. "Serious guys are the most handsome." Li Fa looked at my furrowed brows and said with a face full of affection. "Women who get fucked are the weakest." I was a little arrogant and didn't want Li Fa to be too nice to me, so I started to talk nonsense again. "The error must be huge." Li Fa complained, but unconsciously wrapped her arms around my neck, looking fresh and refined, especially since her upper body clothing was still intact. But I knew that our classmates must be stunned from behind, because although Li Fa's upper body was wearing a tight t-shirt that made her look healthy and dynamic, her beautiful lower body was not only naked and being penetrated by my genitals, but Li Fa herself was also in a position with her legs bent and her lower body spread wide open. And it wasn't just about enduring the shame of being fucked in front of her classmates; her virgin anus was also completely exposed to everyone! I thrust into Li Fa at 30 and 60-degree angles, which felt both pleasurable and uncomfortable because of the bending of my penis. This method was dangerous because each time I had to withdraw my entire penis, expose it to the cold air, and then re-enter the warm environment of her vagina; the alternating hot and cold sensations were like the so-called "fivefold experience of ice and fire," quickly bringing me to the urge to ejaculate. Besides, Li Fa was a long-legged beauty, her figure in no way inferior to that of the already graduated university teacher Li Zhenzhen or any celebrity on television."I'm so envious of her body." "Have you figured it out yet?" Although Li Fa had just said this wasn't intercourse, she was frowning as she endured the pleasurable fullness. Sweat beaded on her temples as I vigorously stimulated her vaginal walls with each thrust, and she was clearly experiencing varying degrees of pleasure. "Not yet. There were two errors that seem too large; we should discard them and recalculate." I really didn't want to take advantage of Li Fa; it's just that the scientist's fighting spirit was burning within my semen! (Most people seem to say blood.) At this moment, the students in the class gathered in twos and threes around the three demonstration groups, diligently recording the data. I knew it wasn't just the boys; some girls were also observing with a learning mindset. It's just that the boys reacted more strongly to visual stimulation; each of them had their crotches bulging, suppressing their sexual desire while also hoping to win a small gift from the teacher. I've roughly determined the angles of entry into Li Fa's vagina: 30 degrees and 60 degrees from the left and right sides, respectively. Li Fa's chest, which was originally almost bloodless, is now flushed. I know that if I thrust in and out a few more times, Li Fa might actually orgasm in front of everyone. So, while still genitally joined, I quickly turned Li Fa, who was facing the podium, 180 degrees, while I stopped my thrusting, so that I was facing the podium, and Li Fa wouldn't be easily seen in her orgasmic position. This way, if anyone wanted to enjoy the lewd sight of my penis filling Li Fa's vagina, they would have to come around behind us. But there was only a row of tables and chairs behind us, making it very inconvenient to continue spying on Li Fa from behind, and it would require a lot of shame. I wanted to turn around, partly because I couldn't rest easy and wanted to see for myself how far the teacher and Tang Chenwei were progressing. To my shame, although Li Fa's body, except for her smaller breasts, was no less impressive than Teacher Li Zhenzhen's, I just couldn't forget the warmth she had given me. Even with my penis deeply inside Li Fa, enjoying the comfort her body offered, my eyes remained fixed on her crotch, afraid that Tang Chenwei might hurt her. However, someone deliberately went behind me, squatting down just to admire the sight of his penis firmly inside Li Fa—it was Huang Ruoli! Oh well, even without that opportunity, Huang Ruoli still fantasized about molesting all the above-average-looking women in the cram school—the headmaster, teachers, part-time students, classmates—his vacant gaze revealing a multitude of sexual fantasies. "Has everyone calculated the data?" The teacher no longer let Tang Chenwei hold her penis; instead, she reached down and guided it to her crotch, adjusting the angle left and right while skillfully thrusting it in and out at a high frequency. Tang Chenwei, satisfied, closed his eyes. As long as he lay there obediently, the teacher moved on him like a pile driver, only it was the teacher who was repeatedly driven deep into his body by her penis. "Idiot! You didn't even glance at the teacher's sexy figure? What a waste!" I thought, admiring the teacher's breasts jiggling wildly, feeling a bit of reproach for Tang Chenwei's wastefulness. No, that's a beautiful sight every man would want to see. The teacher's F-cup breasts rarely had the chance to swing so lasciviously, her pink nipples bobbing up and down, combined with the flying ends of her hair, she was the embodiment of a sexy goddess. How could Tang Chenwei be so well-behaved? That's right, it was precisely because he was so irresistible that Tang Chenwei chose to close his eyes. I was almost overwhelmed just watching, while Tang Chenwei's penis was being pulled into the teacher's vagina every two seconds, then thrusting all the way in, almost reaching the cervix. If he could have both visual and tactile pleasure at the same time, it would be strange if he didn't ejaculate instantly. So Tang Chenwei obediently kept his eyes closed. But didn't that mean Tang Chenwei could ejaculate at any moment? I just hoped that the teacher's vulva was sensitive enough to detect the moment Tang Chenwei ejaculated and prevent his glans from returning to her vagina, otherwise the teacher might really get pregnant by the vigorous sperm of a middle school student! "Those who have calculated the data, come to the teacher and whisper the answer in the teacher's ear. As long as it's within the margin of error, it's correct. You can do whatever you want until the end of get out of class." The teacher was panting from the repeated thrusting of the penis into her vagina, her voice was breathless, her tone hurried and flustered, and the students could only barely understand her instructions. "Correct." Huang Ruoli was the first to rush to the teacher's side, looking down at her breasts as they bounced up and down. After the teacher confirmed his answer was correct, he unhesitatingly pulled out his penis and started masturbating!
The teacher frowned and smiled wryly when he saw Huang Ruoli's 17.5-centimeter-long penis, but didn't say anything to stop him. Huang Ruoli then started masturbating right in front of the teacher! I was both angry and relieved. I was angry because Huang Ruoli kept pushing the teacher's limits. When the teacher said "free time," most people would think of doing homework, reading, or wandering around, or at most fantasizing about the teacher or Li Fa and Zhen Shuzhu being penetrated by a penis. Who would have thought he would openly masturbate to the image of the teacher having sex! I was relieved because since he was over there, he wouldn't come back to me. If he ejaculated in front of me and Li Fa during his orgasm, Li Fa's vaginal position with her vulva facing upwards might have allowed semen to spray into her vagina! However, perhaps I'm worrying unnecessarily. After all, my penis is still inside Li Fa's vagina. If Huang Ruoli really ejaculates at the junction of our genitals, his seed probably won't be able to enter Li Fa's body. I'm confident in the size of my penis; it's currently filling Li Fa's vaginal walls completely, without any gaps or leaks!
"Senior, why don't you do a 0-degree angle of incidence?" Cheng Yixin wasn't as low-level as Huang Ruoli, squatting behind my anus to admire Li Fa's vagina, but he was indeed obsessed with Li Fa throughout the entire class. He didn't look at the teacher or Tang Chenwei, nor did he care about Zhen Shuzhu or Chen Yuhao. He stayed around me from beginning to end, seeing Li Fa's beautiful body from head to toe. "Is it necessary? A 0-degree angle of incidence will definitely result in a 0-degree angle of refraction." I glared at him and replied irritably. "How would I know if I don't experiment? Maybe I'll make a new discovery." Cheng Yixin replied cluelessly. Aside from the hushed whispers and occasional muffled groans from the teacher and Zhen Shuzhu, the classroom was relatively quiet. Cheng Yixin's words reached the teacher's ears clearly. Whether the teacher had lost their ability to think clearly due to Tang Chenwei's actions, they surprisingly agreed, saying, "Yes, Cheng Yixin's spirit is correct. You have to try things to know." Then, they began to move their hips rhythmically up and down at a 0-degree angle, squatting and standing up, making loud "slap slap" sounds on Tang Chenwei's thighs! Seeing the teacher's rather lewd
sexual movements, and feeling the continuous stimulation of Li Fa's vaginal opening tightly gripping the coronal sulcus of my glans, my penis was already on the verge of exploding. How could I dare to make any more thrusting movements at a 0-degree angle? "It's okay, just say so when you're about to cum," Li Fa said, wrapping his arms around my neck, lying back on the table, his legs bent in an M-shape, his heels gently resting on my buttocks, looking intently into my eyes. So she knew I was almost done for. "Look closely, I don't want to thrust too many more times." I glared at Cheng Yixin, then withdrew my glans and began my first straight-up-down vertical insertion of the day. Naturally, there wasn't any change in angle, but the stimulation was different this first time entering Li Fa with even pressure from all sides. The intimate care of Li Fa's vaginal walls on my penis caused my sensitivity to increase exponentially, especially when Huang Ruoli started ejaculating on the teacher's large breasts. The visual impact sent my pleasure soaring to its peak almost instantly. Huang Ruoli's semen sprayed on the teacher for the second time today. This time, he intentionally or unintentionally sprayed some of his semen onto the teacher's large breasts, especially near the nipples, while most of the thick semen sprayed towards the area around the teacher's genitals. Fortunately, the teacher was in a riding position with Tang Chenwei's penis pointing upwards and her vaginal opening downwards; otherwise, if so much thick semen had sprayed into the teacher's body, it would have been really bad! Not long ago, several male students answered the question about refractive index correctly. Like Huang Ruoli, they quickly pulled out their pent-up penises and masturbated near the teacher. Even those who had been watching Zhen Shuzhu, probably afraid of Chen Yuhao's tyranny, didn't dare masturbate in front of Zhen Shuzhu as she was having intercourse. Instead, most of them ran to the teacher, me, and Li Fa. Not long after Huang Ruoli ejaculated, they all followed suit. Most of them, not being familiar with Li Fa, didn't dare spray too much semen on her, instead ejaculating around the teacher. The teacher's large breasts were already covered in her sweat; now, after the boys ejaculated, her nipples were covered in clumps of unliquefied semen, and a large portion of her pubic hair was instantly stained white. However, the semen then dripped from the tips of her pubic hair onto Tang Chenwei's penis and lower abdomen. "Damn, three little ones!" Noticing the strange touch, Tang Chenwei opened his eyes and saw Teacher Li Zhenzhen covered in semen. Seeing the boys holding their penises and some already cleaning up after ejaculation, he realized what was happening. As soon as he relaxed, the teacher's big breasts swaying up and down, and her sexy figure with her long legs spread wide, greedily swallowing his penis with her vagina, made him unable to resist any longer!
"Oh~ Oh~ I came! Teacher, don't move!" Tang Chenwei cried out in pain, his brows furrowed. He tried to push the teacher's thighs with both hands, hoping she wouldn't move while he was ejaculating. However, the teacher continued to ride his penis up and down with abandon, even revealing his abdominal muscles. Tang Chenwei ejaculated inside the teacher's body under the squeezing of this human juicer, experiencing a mixture of pain and pleasure! Seeing my beloved teacher being ejaculated inside again, and in front of the whole class, it was Tang Chenwei, whom I used to hate to the bone, who ejaculated inside her. Although I was in pain, the warmth of Li Fa's loving embrace of my penis brought me a completely different contrast. Perhaps it was this contrast that made me consciously pull out my penis as soon as I entered Li Fa's body, and then aim at Li Fa's navel to ejaculate. Although I couldn't really spray my semen into Li Fa's body and completely possess her, the experience I had just had made me savor it again and again. Now, my first consideration was safety. I didn't want to get pregnant by being greedy for momentary pleasure. Before I pulled out my penis, Li Fa let out a soft moan, and her heel, which was on my buttocks, subtly pressed down. Didn't she notice my impending ejaculation? She's clearly not a virgin, and she's been thoroughly trained by my aunt; how could she not know that my glans swells just before ejaculation? Unless she reached orgasm and intentionally let me ejaculate inside her! Luckily, I managed to break free from Li Fa's restraints with brute force. She was already at a huge loss for willingly engaging in intercourse with me; if I had ejaculated inside her, that would have been a truly devastating loss. I finally breathed a sigh of relief, but I think I'll probably never forget the beauty of Li Fa's body. If only I loved her instead of my teacher, I wouldn't have to endure the pain of facing my teacher while she was being ejaculated inside by someone else. The teacher had also been enduring Tang Chenwei's internal ejaculation, but being slightly inexperienced, she only stopped her hip movements after Tang Chenwei had ejaculated inside her vagina for two seconds. She then sat tightly on top of him, allowing him to finally stop experiencing both intense pleasure and pain, and instead enjoy the sensation of his penis being squeezed by the teacher's vaginal walls. His glans slowly and profusely ejaculated, filling the teacher's young yet mature vagina with semen. Unlike others who could only ejaculate on the teacher's body and couldn't enjoy the privilege of possessing her deep inside, this teacher was different. I could completely understand the smile on Tang Chenwei's face. Back then, after secretly ejaculating inside the teacher, I not only felt I had grown up, but also regained my confidence as the first student to have sex with her. The experience of ejaculating inside the teacher wasn't just about realizing I had a privilege; it also made me believe I held a different status in Teacher Li Zhenzhen's heart than other students. However, all these fantasies shattered after the teacher was ejaculated inside by Cheng Yixin and Tang Chenwei. It turned out the teacher didn't only allow one student to possess her. I numbly rubbed my penis, letting it release more regretful than pleasurable semen onto Li Fa's pure body. Although Li Fa wasn't a virgin, and my penis had repeatedly entered and exited her body before ejaculating, in my heart, her innocent and straightforward kindness outweighed her physical sexiness. Even her wanton act of letting me ejaculate inside her after just reaching orgasm didn't diminish my impression of her. Although the teacher was letting Tang Chenwei ejaculate inside her, her eyes were fixed on me. She sat on Tang Chenwei without moving up and down, as if she was thinking about something. It wasn't until she saw my unhappily expression after ejaculating outside Li Fa that she seemed to realize something. She stood up straight in surprise, her upper body slightly bent forward, looking at the opening from which semen was flowing out of her vagina. Then, she used her index fingers and the inside of her thighs to press and pull her labia minora outward, making the semen drip out faster. "Tang Chenwei, how could you ejaculate inside the teacher's vagina?!" The teacher looked at Tang Chenwei like a frightened bird, jumping up and down slightly to make the semen inside her vagina flow out as soon as possible due to gravity. Seeing the teacher's breasts shaking again, and the stimulating sight of her vagina filled with semen, Chen Yuhao couldn't resist either. He pulled out his penis and ejaculated on Zhen Shuzhu's buttocks, covering Zhen Shuzhu's anus with semen. At this moment, Cheng Yixin finally ejaculated. Although he liked Li Fa's body very much, based on the broken window theory, since no one else had ejaculated on Li Fa, he went to the teacher's side and ejaculated on the teacher who was jumping rope. His penis was less than ten centimeters away from the teacher's sexy buttocks, and the semen sprayed directly onto the teacher's shaking, white and tender buttocks. The teacher noticed someone had ejaculated on her again and disgustedly slapped Cheng Yixin's penis away. The penis that had once ejaculated inside her vagina was now being rejected, the semen spraying onto the feet of a female classmate, Fan Yijin. "Teacher, I just said I ejaculated," Tang Chenwei said innocently, his initial joy turning to fear and doubt. He didn't want the teacher to become wary of him and hold a grudge, refusing to do experiments with him again. "Nonsense! You did the same last time, almost ejaculating on one side and still trying to insert it into me!" The teacher's eyes reddened with anger. Her gentle movements ceased, and she continued to sob as she pried open her vulva, examining the area around her vaginal opening. Between the teacher's hairy vulva, a strikingly pink vaginal opening was visible, but the continuous flow of white, cloudy semen was a horrifying sight, dripping in clumps onto the classroom floor. It was too late. From the moment Tang Chenwei said he had ejaculated, to the moment the teacher not only didn't stop the sexual intercourse but remained firmly seated on top of him until he finally got off, almost a minute had passed. Tang Chenwei's limp penis, with no more semen flowing from its tip, clearly showed that he had completely and utterly ejaculated into the teacher's body. Except for Chen Yuhao, who was still ejaculating and had no time to care about what had happened, the entire class was silent, save for the teacher's sobs and the sound of tissues rubbing against the opening to wipe away the semen. The most innocent was probably Tang Chenwei. The teacher had willingly mounted him, and he had even reminded the teacher that he had ejaculated, yet the teacher had completely drained him of his semen before blaming him. His eyes reddened slightly as he silently got up, wiped the bodily fluids and semen from his penis, and then put on his pants. However, being a professional, the teacher quickly wiped away the semen after crying, confirming that no more of Tang Chenwei's semen had leaked from her vagina. This time, she didn't let her breasts be exposed through her sexy corset; she put on her jacket, returning to her previous sexy yet not obscene appearance, and continued teaching. If someone were to walk in now, they would never guess that just a few minutes ago, the teacher was not only covered in semen but had also been sexually assaulted by a male student who ejaculated inside her vagina. "Your calculations just now show that my refractive index is approximately 1.2." The teacher deliberately omitted the word "vaginal" before "vaginal refractive index," but her attempt to cover it up would make me remember today's class experience for the rest of my life. "No, my calculation is approximately 1.3." Cheng Yixin raised her hand and stood up to speak, her eyes still fixed on her notebook. "You were almost never at the front of the classroom just now." Although the teacher was conducting the experiment of repeatedly inserting and withdrawing Tang Chenwei's penis, she was actually paying attention to her surroundings. "I'm in Li Fa's group. Li Fa's vaginal refractive index is about 1.3," Cheng Yixin answered, still checking her calculations on paper. "Ah, teacher, sorry, I have no more questions." Cheng Yixin suddenly sat down, showing no intention of continuing the discussion. "Was there a calculation error?" the teacher pressed, forcing Cheng Yixin to stand up again and seriously answer her thoughts. "No, I just misunderstood. A higher refractive index means a smaller angle of refraction, and a smaller angle of refraction actually means greater deflection. But I mistakenly thought a lower refractive index meant less deflection. I knew it! Li Fa is younger, how could her penis deflect less inside her vagina? Actually, a smaller angle of refraction means greater deflection!" Cheng Yixin realized her mistake and answered happily. Oh, so that means Li Fa's vagina causes more deflection of the penis because she's tighter... What! How could you say that in front of a girl, especially when you're comparing vaginal tightness with your female classmate and your beautiful tutor! The teacher, whose emotions had calmed down somewhat, was disrupted by the clueless Cheng Yixin. She instinctively pulled down her jacket zipper, wanting to remind everyone again that she was the class's leading lady by showing off her cleavage. However, after witnessing Li Fa and me having sex, Li Fa's desire seemed to have increased, and the teacher's body no longer seemed as alluring as before. The teacher realized this, and her brow furrowed again. Adding to this, Chen Yuhao had just finished with his girlfriend, Tang Chenwei was falsely accused of deliberately ejaculating irresponsibly inside the teacher, Huang Ruoli had ejaculated twice in one day, and I had witnessed the teacher being covered in students' semen and then having Tang Chenwei ejaculate inside her. Almost all the prominent figures had lost their energy and become listless. For the last ten minutes or so, the class was like Taiwan, besieged by five low-pressure systems this week, spending the time in an unprecedentedly low atmosphere.

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