When I was in middle school, the gym locker room was this long, fairly narrow, room with the shower at one end, and the door at the other, with lockers lined up on the walls. There was a group of these 3 guys who would get into the shower, go to the far wall, start running, and then slide on their bare-ass, along the floor for the entire length of the locker room.
For 7th grade boys, this was clearly the funniest thing that had ever, and would ever occur. We'd stand on the benches in front of the lockers and cheer as these guys slid approximately 30 feet on the nasty, wet floor. It was the highlight of the day, and something that was looked forward to during dodgeball, pickleball, or whatever we were doing in PE.
The fun all came to an end, one fateful day, when one of the sliders, got a bad launch and racked himself on a bench, about 15 feet into his run. It caught him full on in the jimmies, and he immediately started screaming and crying. Someone called for the gym teacher, Miss Gabrielson (late twenties, good looking) and she came running to find this kid, sopping wet, naked and sobbing.
She didn't let any of us leave until she'd had a full explanation of what happened. She didn't see the humor, and we all got in trouble; the sliders for perpetrating the act, and the rest of us for egging it on. I remember having to take the incident report home to my parents. My mother was appalled. My Dad was most concerned that I hadn't been one of the ones sliding bare-assed on the floor. After I assured him that I wasn't, he took it pretty well.