I've been in this class for a couple weeks and I have to say my initial confusion and apprehension has worn off. I've gotten to know a bit of the class. Like that Arcanine, his name is Ashton and he's just this big goofy guy with little to no thoughts in that head of his. He came up to me during the first week asking for help with some homework or something, he said he could tell I was smart because, quote, "You've gotta have something that makes up for being so small" He said it with that big oblivious look on his face that told he didn't understand how rude that was. I did decide to help him out and I now work with him everyday after class, he doesn't really understand the material but with my help he just barely gets through. I also don't think he realizes his size, he's like 8 feet tall, he's constantly knocking things over or bumping into people and he can't help himself from flexing his large biceps every few seconds. He typically just wears an unbuttoned jacket leaving his bare chest and abs exposed, as well as some tight shorts that reveal a sizable... uhh... never mind. 

I've talked to Sam, he's this dorky Typhlosion, he's all awkward and it's really hard to keep up a conversation with him. I've kind of been avoiding him recently as anytime we bump into each other we end exchanging awkward greetings before continuing our original route facepalming about it. There was Felix, he's a Lopunny. He's always on his phone, like constantly, don't think I've seen a moment of him without it. I've tried talking to him but he just kind of shoos me away. I then tried talking to Jett who was sitting next to him but he was a bit of an asshole, no, a lot of an asshole. When I tried to talk to him he called me fag and told me to go get AIDs and die. 

Anyways that's all who I've talked to, it takes a lot of guts for me to gather the courage to talk to someone and so far it's just been a dud. Excluding Ashton but he came to talk to me first so he doesn't really count. He's started hanging around me and Theo, I think Theo and him have a lot in common, they're both kind of gym rats, they are both way bigger than me, and neither are the sharpest tool in the shed. Despite my failed attempts I actually have been enjoying the class, I enjoy everything we do in there even if I don't have the best social game. Mr. Volcaryn has seemed to take a liking to me even though I still haven't read that dreaded syllabus, maybe it's because I'm one of the only ones actually listening to his lectures. He's pulled me aside after class to give me some advice, he's seen that I'm a bit nervous socially so he's been trying to get me to come out of my comfort zone a bit, that's why I tried to talk to people in the first place.

I have to admit though, despite my success in the class there's this new lesson Mr. Volcaryn is giving today. It's about reproduction and how genes are passed down and I wouldn't find anything weird about it if Mr. Volcaryn wasn't so... strange about it. I also notice everyone is much more attentive suddenly. I guess it is essentially a lesson about fucking but we're not in high school anymore, I wouldn't imagine this subject being one that's very intriguing. Maybe it's just because the subject hasn't captivated me like the others have, just something about how he speaks is different in a way that makes me feel uninterested. I kind of tune him out and pull out my phone, scrolling through Twitter and other social medias, I don't have to name all of them get off my back. Suddenly I hear my name get called.

"Sylas" Mr. Volcaryn said with a sly grin. "Would you like to volunteer?" I look around and I see everyone looking right at me, except Felix who's still looking at his phone, and Theo who's blushing and just looking straight ahead, like he's avoiding eye contact. I wasn't paying attention but I doubt it could be anything too bad right?

"Y-yeah sure" I stutter a bit, all this attention makes me nervous. He gestures me to come up next to him. I walk up nervously, not sure what I've just agreed to.

"Since Sylas here is the shortest of you all I believe he would make the best for this demonstration. I also think other aspects like his species, type could help with explaining a few concepts." Mr. Volcaryn explains to them. I guess I never really thought about it but I suppose I am the smallest one in this class. He stops talking to the class and looks to me. "Sylas, would kindly remove all of your clothing?" 

"P-pardon?" I look a him with a nervous smile, starting to sweat. Did I hear that right? Did he just ask me to strip down.

"For the demonstration, this won't work if your clothed." He says, a bit more stern than before.

"I-I-" I stutter confused, a bit uncomfortable.

"Okay don't worry, I can do it for you if your too nervous." He steps closer to me, place a long claw right beneath my shirt, I feel graze my belly. He notices me breathing a bit heavily. "Just relax, I've done a mating demonstration plenty of times, it'll be just fine" He says as he slashes his claw up, tearing my shirt. I then feel him rip the rest of my shirt away.

"M-mating!? I can't-!" *He interupts me when he tears away the sweat pants and boxers I'm wearing, leaving fully exposed. He picks me up with ease and places me on my back on his desk. I feel him begin to tie a rope around me.

"Sorry this is just a precaution, I can get a bit carried away so I just want to make sure you stay in place" He says tightening the rope wrapped around me and the desk. I look around at the class, everyone staring at my now naked body laying on top of the professor's desk. I can see Felix recording it all. Before I can say anything Mr. Volcaryn continues.

"Class for this demonstration I will show you how to procreate with a female, now this is a male of course because a female could and would get pregnant if I attempted this with her, especially if she was a grass type like this, everyone knows one is much more susceptible to being impregnated by the type they are weak to. Now I want you to take note of our species. You see while the Charizard gene is dominant the Meganium gene is recessive, so if I were to get Sylas pregnant the baby would most likely come out as a Charmander." He explains to everyone. I try to squirm out but it's no use the rope is too tight. I try to tell him that I did not know what I was agreeing to but he seems to be ignoring me. Ashton raised his hand and it seems Mr. Volcaryn is prioritizing the class's questions over me.

"Wait so if he's going to be pregnant where would the baby come out?" Ashton asks enthusiastically, he sounds just as curious and silly as always, he must be genuinely confused.Mr. Volcaryn chuckles.

"No no, it was a hypothetical, if he was a women the child would grow up to be a Charizard like me. I mean most men can't pregnant, it's an incredibly rare occurrence. You'd need a Maternus man to take the sperm from a gestator man, they are very fertile guys who tend to produce a lot of semen, like a LOT of semen." As he explains I feel his cock rubbing against my ass.

"S-sir please, I don't-" His hand covers my mouth as he shushes me.

"It'll be rough but I know you can do it." He turns back to the class as he grabs my dick and starts stroking me slowly. "It is important both partners are as aroused as possible, it puts your body in sort of a baby-making mode, making you more fertile. Get ready Sylas" Before I can continue my protest I feel him slam into me, one powerful thrust and it's all in and it's fucking huge, and it hurts the way it stretches me open. I look down and I can see it bulging out my belly, clearly able to see the outline of his full tip in my stomach.

"Fun fact, I'm actually one of the few men that is considered a gestator, if I come across a maternus guy I could theoretically get him pregnant" My eyes widen. He must be joking, the odds of something like that happening are so low! There's no way, he said it so casually too. I try to say something but his hand over my mouth muffles any protest I might have as he pounds me ruthlessly. Is he going to get me pregnant? He wouldn't cum in me right? His warm dick heats up as his arousal increases, his precum is very warm, must be because he's a fire type. I look at the class, everyone is staring in disbelief, I look at Felix. He's recording it. He's recording me being fucked in front of my whole class by my professor, everyone can hear the way I moan involuntarily but loudly and it seems this class won't be the only audience.

By this point I have to admit, despite the painful feeling of Mr. Volcaryn's massive cock tearing me in half, it feels strangely good. Not just the fucking but also the situation, my professor is really fucking me infront of our entire class (small class but still), and the way he lacks any softness when using me also adds to the fantasy. After a bit over 15 minutes I feel him pause deep inside me, that large bulge now frozen, I hear him groaning softly, I feel his cock throbbing, he's clearly holding something back.

"What's wrong Mr. Volcaryn?" Ashton asks with a hint of concern. He asks that as if this is a totally normal situation, like it's not totally weird for the professor to be fucking a student in front of the class.

"I'm really trying not to cum in him- but he's so tight and he's squeezing down on me." He explains. He turns to me. "S-Sylas, don't move, you can't afford to have a belly full of cum right now- just give me a moment" He says to me, staying still, seemingly trying to calm himself so he doesn't cum. I feel a bit relieved, at least he's trying not to cum in me, I likely won't have to carry his baby. I turn my head to the class and I see Felix whispering something into Jett's ear. They're both chuckling with these sinister looks on their face. Jett gets up from his seat and walks up to us.

"J-Jett? What are you doing?" The professor asks, seemingly straining to contain himself. Jett ignores the professor, now standing right beside me, places a hand on the large bulge in belly and starts to squeeze it slightly. "H-Hey stop that!" Mr. Volcaryn yells, reaching out to stop him but is interrupted by his own climax. I hear him moan loudly, Jett quickly runs back to his desk to watch what he had just done. I feel myself get injected with a hot liquid, hot enough to not be particularly comfortable, then more comes out, and more, as it floods my insides.

"F-Fuuuck!" Mr. Volcaryn growls loudly as he starts to thrust again, pushing all of the steaming hot baby batter deeper into me, still more and more floods my organs. I feel the semen desperate to escape pour out of my ass as he plows me, steam emanating from it, yet he keeps cumming more and more. My belly swells up, becoming fat and plump as it tries to hold all of it. I'd say for a whole 90 seconds straight he just kept releasing more and more into, and the more he cums the more I feel it travelling through me. Suddenly shoots up from my throat and out of my mouth and out of my nose, and then again, then every thrust was followed by more of the creamy hot cum shooting out of my face. Soon enough it slows down, his thrusts become less powerful and slower. I feel him pull back, and his cock exits my body, his hand leaves my mouth and I'm left a cum filled mess.

"Jett! Do you have any idea what you've just done!?" Mr. Volcaryn exclaims angrily. "He won't be able to go anywhere with that belly!" He yells, like I'd even be able to walk anyway, the way he fucked me would've had me clinging to the walls for weeks even if he hadn't filled me up.

"Sorry, I just had to see what would happen." Jett responds with a chuckle and a cocky tone. "I thought that was the point of this class to experiment and learn." Mr. Volcaryn looks disappointed but doesn't seem to do anything about this. He looks to me.

"I apologize Sylas, I had been a bit... pent up for a couple weeks, I wasn't planning on this." He said sternly before looking back to the class. "I think we've gotten through everything we need to for today. Class is dismissed early today but I do need a volunteer to take care of Sylas. After rough sex like that he likely won't be able to walk to well, especially with that large belly and I have important plans." He explains, his anger at Jett seemingly vanished and he's just as he was before. After he asked for volunteers I see 2 hands, one from Ashton and one from Sam. Mr. Volcaryn followed the class out and left Me, Ashton and Sam alone in there.