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When you let your pee, poop, and cum all mix together in a condom like it's a party and then throw it in the toilet like it's trash.
I did a whoopity doo in the hotel bathroom and the toilet clogged.
My roommate did a whoopity doo and now the whole floor smells like a dead raccoon.
I did a whoopity doo in the classroom and the teacher sent me to the principal's office.