Your next class is P.E. You're in the boys' locker room since you're considered one of them. Nobody even suspects that you might be trans, at least... you don't think so. You've been living as a guy ever since starting this school and never told anyone, you pass relatively well and you're happy that way. It's what you've always wanted, right? Though truth be told, you always get a bit flustered in the locker room, in the back of your mind there's a feeling that you don't fit in, like you're not really one of the boys, it's hard to ignore that biological difference between you, in the locker room you almost feel like... a girl pretending to be a boy.
You always change your shorts facing away from everyone so that nobody will notice your lack of a bulge, and to change your shirt you always wait for them to leave so they won't notice that you wear a binder.
Today is no different from every other day, all the guys have already changed and left, leaving you alone to do your business. As you pull your shirt up, suddenly one of the boys comes back. He freezes while closing the door behind him as his eyes widen and you quickly pull your shirt down. But it's too late, he saw it. You try to play it cool, pretending like nothing happened as he awkwardly explains that he forgot to take his water. He leaves and you're able to change. You hope that he doesn't realize what a binder is for, and if he does, that he keeps it to himself.
In the gym, there's a certain tense atmosphere in the air. The guys are looking at you weirdly, their eyes lingering on you longer than normally as they exchange strange looks at each other. It can't be... that one guy couldn't have told them, could he? You made sure to keep stealth all those years, it can't be that one stupid moment just ruined all that effort. The class ends and you're back in the locker room. 2 boys approach you, almost towering over you.
"Hey dude listen, can you..." You don't even register what's going on as one of them holds your hands behind your back and the other pulls up your shirt and then your binder, exposing your firm breasts to everybody in the locker room. They bounce off of one another upon being freed and your nipples harden against the cold air.
"I knew it, he's a fucking girl!" The guy that's holding your hands yells, drawing the attention of everyone in the room. You can feel their gazes on your skin, on your boobs, they just found out. Everyone just found out. You just stand there completely numb, you know there's no point in trying to fight, you wouldn't overpower even 1 man, let alone 2.
It's not like they haven't suspected anything. They could see the width of your hips every time you took your pants off as well as the pitch of your voice, your soft features and delicate build couldn't be hidden even if you tried. You always said that puberty just came late for you, but as you grew older, it became increasingly harder and harder to just pin everything on being a late bloomer. You were different than other boys and they noticed that, and now there was no turning back.
You don't really know how you found yourself in this position, but you're currently lying on your back on a bench, your legs wide spread while one of the boys is fucking your pussy and a line of other guys stand behind him, waiting for their turn on you. There are maybe 20, no, 30 of them, some standing next to you and fondling your exposed tits that jiggle with each thrust inside of you, 2 guys have their dicks above your face, masturbating to the sight of a hot girl being fucked.
"I can't believe she hid it for so long!" "I mean, I always kinda knew, just look at her!" "Damn, this weird bra thing hid those tits pretty well huh, you'd never guess she even had them and that they looked this good!" You can hear their voices in the background of your own moans and whimpers.
The boy that's currently fucking you starts shaking and breathing heavily and you can feel his warm cum fill your cervix. You immediately get scared for a second, both by a prospect of just getting impregnated and a realization that if that's not the case, there are 30 more who will also fill you up with their seed, so getting knocked up is practically guaranteed. However, your fear leaves as soon as you approach your own orgasm while one of the boys squeezes your boobs together, making them bounce upon release. You can't help your physiological responses, no matter how much you deny your womanhood, having a female body brings you pleasure, having a thick cock shoved inside of you just feels too good! During those moments when you cum, all this trans stuff always leaves your head completely, in those moments you're actually glad to be a woman, to have a hole that's made to be fucked, to have tits and you actually want others to see them! At least that's how it is when you masturbate with fingers or dildos, but nothing can compare to having a real cock thrusted inside of you and shooting a load deep into your womb!
The boy steps aside and you're left trembling from your overbearing orgasm. But that wasn't even the beggining. Another guy steps into his place, leaving you no room to even catch a breath as he thrusts into you almost immediately. He got hard just by watching you get fucked like a whore. This one is much bigger than the last one, you can swear you can feel him in your belly. He looks down on you, smirking mockingly as he pulls back and thrusts with full force once again, hitting your sweer spot and your eyes roll back.
"Pffft, I guess the biggest tomboys always turn out to be biggest sluts in the end." You don't mind his derogatory tone, you actually like it. In this moment, you can't believe it, but you actually like being seen as a girl, a slut for those guys, a cumdumpster, you're glad that your body makes them horny. In this moment, you no longer see yourself as one of them, with no clothes on there's no way to keep the illusion up. You're fundamentally different than them, beneath all your clothes you're a girl, made to copulate with them, not be them.
The next one starts grinding his cock against your pussy instead of going in, slowly rubbing his entire lenght against your hole and clit, covering himself with your juices. It's so hard and thick and his teasing is driving you crazy, you want him *in* more than anything right now!
"Come on, what's the hold up? Just fuck her already!" "Yeah hurry or we won't get to fuck her before the break ends!" The others start forming a circle around you.
"Jeez, she's already too full, just wait a second until more of it leaks!" You can't see it, but there's quite a lot of cum leaking out of your hole. The guy covers your entire pussy with the white substance by grinding his cock against it. It's quite a nice creampie. The slick, slimy sounds only make you even more horny.
You've lost the count of how many have cummed inside you already, you stopped counting after the 10th guy. All you're sure of is that you've had at least 5 more orgasms. Right now, you find yourself on all fours, the last 3 boys left are inside of you from all the entrances. There's one behind you fucking your ass, one in front of you who you're deep throating right now, and the one who forgot the water and started all of this is currently below you, bucking his hips and fucking you deep inside your pussy. Your tits hang above his face and he's sucking on your right nipple while squeezing the other one.
It's been 3 months since that day. You've noticed your belly got a bit bigger. It's no surprise, it was a given that you'd get pregnant, you've had loads of cum from 30 different men inside of you that day. Your boobs have also been increasingly harder to bind - it takes more effort to put on a binder, and even if you wear it, you don't appear as flat anymore, your breasts seem more full and heavy lately. You don't try to fight it, in fact, you've become okay with pregnancy. You actually think about detransitioning for real. Your boobs are getting filled with milk, you start producing more and more estrogen with each day, your body does the most female thing it can possibly do and you're strangely okay with that.
You eventually stop binding completely, your breasts are now too big and sore, besides, your belly is very clearly visible, there's no point in trying to fool anyone, everybody knows what you are now, there's visible proof to everybody that you've been fucked in a way only a woman can be.