In high school I left my backpack in my gym locker by accident. Went back to school to get it that evening because I needed it for homework. There was a girls basketball game that night and the visiting team was using the boys locker room. Apparently they didn’t lock the door because I walked in on about a dozen girls when they were showering/changing after their game. My friends didn’t believe me until I got called into the office to talk to the principal about it, didn’t get in trouble though