Jon shared a few classes with Biff each day. After maths they had English and then before lunch they had gym. English class had been the same as maths class. Jon was a bit distracted by Biff's girly legs but apart from that nothing of interest had happened.
Jon had grabbed his gym bag and was heading to the locker rooms to get changed. Biff was going into the locker room just ahead of him. Jon hoped tot avoid any more ridicule from Biff. He hadn't noticed himself using his diaper that morning and he hoped it was still dry enough to last until lunchtime. Jon reached down and squeezed the front of his diaper, relieved to find it still mostly dry. He went his usual spot and took his gym clothes out of his bag. He removed his shoes and pulled down his pants. Under normal circumstances Jon would have been mortified to be standing in a full locker room in just a t shirt and pink diaper but his altered modesty meant he didn't really do anything to hide it. He didn't move particularly quickly, taking off his t shirt and pulling on his gym shirt before pulling on his shorts. Nobody made any jokes or comments about his diaper, not even Biff.
Jon looked over and saw Biff standing at his own spot. He had removed his shoes and pants and was rustling in his bag for his gym clothes. Jon seemed to be the only one finding anything strange about Biff standing in a pair of high cut, red panties. His altered butt really filled out the back of his panties and when Biff turned around to talk to one of his friends Jon saw the smooth, flat front of the panties sitting tight against Biffs crotch. Biff casually pulled out a pair of gym shorts and slowly pulled them up his long, curvy legs. He had to pull them tight to get them over his hips and big butt. The shorts were much shorter and tighter than any of the guys shorts and they really highlighted Biff's curves and lack of bulge. Biff was chatting away to his friends as he out on a very small pair of shirts and a very girly pair of sneakers which were white with pink trim.
Everybody made their way out the the gyym, Biff swaying his hips as he walked and Jon waddling slightly due to the bulky diaper that was under his shorts.
Gym consisted of a few laps to warm up and a game of basketball. Biff wasn't as fast as usual but he was still one of the best players out there. Jon was his usual average self, happy to put in the effort and not making any major mistakes.
When class ended everybody made their way back into the locker room to get changed back into their regular clothes. Jon was chatting away to his friend Pete as they walked back. Pete asked Jon if he was doing anything at the weekend. Jon was in the middle of replying when he suddenly stopped mid sentence as he felt an uncontrollable churning in his stomach. He felt his legs buckle slightly as he moved into an involuntary squat. He stared silently at Pete and grunted a few times. Just as quickly as it happened, it was over. Jon stood back up straight feeling a sense of relief. He resumed his conversation with Pete, not missing a beat. Pete acted like this was a fairly normal occurrence, not really making any comment about the fact that Jon had just popped himself mid conversation. Jon was fully aware of what had happened. He was glad that it was lunchtime now and that he'd have a chance to clean himself up before lunch. He stalled a little bit, waiting for the rsst of his class to clear out of the locker room. He grabbed a fresh diaper and pack of wipes from his bag and made his way into a bathroom stall. He took off his diaper and quickly cleaned himself up before putting on a clean one and then quickly finished getting dressed. He rushed out of the locker room, looking forward to meeting Karyn for lunch.
