You decide to take the running shorts, they were made for girls but you didn’t care, you wanted them.
You took of your trousers, leaving you in a pair of boxers in the lost and found, deciding to stick with the look you grab a pair of girls underwear, it was a pair of panties and a bra, both black and lacy, you quickly take of your shirt, struggle to put on the bra, then put your shirt back on. You then took of your boxers, hesitated for a moment, then pulled the panties up your legs, putting the running shorts on proved difficult, but after multiple efforts, they were on.
You examined yourself in the slightly cracked mirror, there was a slight bulg out the front of the shorts because of the tightness, but you didn’t care. You took out you time table and saw that you had gym now anyway, you grabbed your trousers and boxers and hid them behind a box before leaving for gym class.
When you arrived at gym class, you walked over to an exercise bike and sat on it, you started pedalling slowly, but, whilst pedalling your body began to change, your legs became hairless and smooth and your thighs thickened along with you hips and butt, this caused the running shorts to stretch further and outline your new figure perfectly, at the front of your shorts, your penis had disappeared and had left a vagina where it used to be, then, the changes spread upwards, you waist slimmed and your shirt started riding up until it was a crop top, then it disappeared and left the bra alone, the bra then transformed into a black sports bra and your chest started shooting out leaving two huge breasts, all hair was lost from both your face and your chest. Yet surprisingly nothing else changed on your head.
You got of the exercise bike and admired your new figure, a smirk grew on you face and you turned around, every boy in the room was staring at you longingly now, you walked up to your best friend Joshua and grabbed his hand and lead him to the bathroom.
Once inside, your ripped your clothes off as quickly as possible and started riding his penis, you moaned in pleasure, the feeling was amazing, you never wanted to stop, but you and Joshua had to hide in a stall with his penis still inside you, when you heard the door opening, it was.