A friend of mine confessed this story once. In senior year of high school he invited his girlfriend over while his parents were out and they wound up doing it doggy style on his parents’ bed. His girlfriend had been feeling a bit sick that day but had decided not to tell him in case it ruined the mood.
She wound up regretting that decision a few minutes in when, ah, something ruptured and she wound up spraying diarrhea all over him. He started screaming, she started screaming.
And then his parents walked in.
“You must have gotten in big trouble,” I’d said to him.
“No,” he said, “without anyone saying a word we got off the bed, got in the shower, our parents put the bedding in the washer, my girlfriend got dressed and went home, and we never spoke of the incident again.”