In 7th grade I sat down on a stool in Visual Arts class without realizing it had (a lot of clear) glue on it, so when I tried to get up — I discovered my shorts were glued to the stool. 
My strapless dress also slipped down at our 6th grade formal dance.
I’ve also been kicked in the crotch by a horse.
I have more, but I’m too embarrassed to type them here… they’re that bad. 