Gym class

You head into school, and walk down the hallway and to the lockerroom, for your first class, gym. You sit down on the bench and strip off your blouse and skirt, and as you pull out your gym shorts and t-shirt to change in to, you get the feeling that someone is watching you. You turn around, and sure enough, there is another girl, a senior, but one you don't really know, staring at you. She is staring at you, and doesn't look away, even as she strips off her bra, to change into a sports bra. Her open attention towards you turns you on, and reminds you that your favorite part of gym class is seeing people partially undressed. You begin to think about sneaking over to the guys' locker room to check them out, or maybe taking a spin around your own locker room, and scoping out the other girls. If that's the case, you could always start by heading over and talking to the girl staring at you.