Aww! It's funny in retrospect but she (and he!) must have been so horrified.

Nowhere near as dire, but kind of amusing: When my cousin lived with me, about fifteen years ago, I had one of those big clips in my hair. It snapped undone and popped me in the back of the head and I thought she'd thrown something at me and I turned and yelled at her, "OW! What the hell is wrong with you!"

She was just like, " ... O_o ... "

I felt pretty dumb. Good times. :)