Ah yes, 8 A.M. gym, the bane of the school body. There was nothing worse than pulling yourself out of bed in the wee hours of the morning only to come face to face with an hour of exhausting exertion. Only the most dedicated of slackers would avoid winding up as sweaty, unkempt messes by the end of it. That said, you are one of the few that doesn't mind the class for two good reasons. First all all, you are one of those dedicated slackers. The second is the girls. There's no better way to start a day than by watching a bevy of beautiful high-school girls in too-tight uniforms bounce, jiggle, and gyrate themselves in a sexy sweat.
Not wanting to miss out on the extravaganza, you rush to the locker room and change into your uniform. You find that something in your gym shorts have changed. They're tighter, somehow. And not evenly so; the shrinking seems to have only affected the crotch area. Not an issue now, but if you happen to pop a hard one during gym, the outline will be visible to anyone who cares to glance below your belt. It sucks but, lacking the time to get a new pair, you suck it up and leave the locker room.
You meet up with your friends at the field bleachers. It's your usual spot, a perfect place to wait for the next ten minutes before class officially starts. Not just because of the comfy seats, either; the row sat directly to the left of the girls locker room. It's the perfect vantage point to observe the girls as they come out in their sexy uniforms. Perverted, perhaps, but by now it's become a sort of tradition. One so engrained you all have even developed a checklist of sorts.
Though you enjoy watching all the girls, there are a few you enjoying ogling specifically. Generally speaking, the first of which is a girl dubbed "Midriff Melissa". She's a nice, if not somewhat slutty, sophomore who's modified the top of her uniform, cutting off the midsection to show off her flat belly and wide hips. Technically it is a violation of school rules but the all male gym faculty "mysteriously" seem to overlook it.
"Holy crap," one of your friends says, "look at Melissa!"
You pull yourself out of your musings and turn to the door to find a shocking sight. Out trots Melissa sporting a bulging belly with a pair of love-handles. She looks night months pregnant and you would have assumed she was if not for the incessant jiggling that accompanies each of her steps. Her face is beet red and her eyes are turned downward. It's utter baffling; she didn't look like this the last time you saw her. How'd she get so fat? And why just in her belly?
The pudgy girl soon disappears from the area, leaving you to observe the next target. Like Melissa, she took has a nickname: "Busty Becky". As her name suggests, she's a top heavy girl, with breasts so large that even DD cups can't contain them, or so she says. Her outfit of choice is a small sized uniform. It's an incredibly tight fit for her bust; the fabric is stretched to the limit by her massive tits, showing off their every curve.
Again, your thoughts are interrupted by a commotion at the locker room doors. Out waltz Becky in a hysterical fit, her face reigning down a torrent tears. To her side stand to of her nameless friends. It's obvious why she's crying; like Melissa, Becky's been changed. Her breasts have disappeared, leaving her as flat as a sheet of paper. Murmurs of shock pass through the group as she guided away, presumably to the nurses office.
You begin to wonder just what the hell is going on when the final girl comes out of the locker room. A girl you know all too well. It's Sarah, your ex. While her body looks unchanged, her uniform definitely has. Typically she was a modest girl, the kind that didn't like to modify her uniform. Now, though, she's wearing what could be considered a strippers outfit. Her top, like Melissa's, now has no midriff and the upper half has been removed as well, leaving what is essentially a tube top to show off her deep cleavage. The accompanying shorts are tiny, clinging so tightly to her backside she might as well be wearing nothing at all.
It's a sexy look admittedly, one that makes you member start to harden. Bashfully you cover it up, not wanting your friends to notice. Not that they would; they're too busy wolf-whistling at her. Even the gym teachers are at a loss, ogling her as much as you all have been. She ignores them all, pausing only to blow you a kiss. You dart away, embarrassed, only to feel a strange tugging sensation on your cock.
She soon walks off to parts unknown, leaving you on the bleachers with your friends. The rest of the ten minutes quickly pass and as it turns out...