A whoopity doo
When you take a condom and fill it with everything you've got, pee, poop, cum, and then let it go like it's the final round of a wrestling match.
I did a whoopity doo in the shower and the drain started bubbling like it was alive.
My cousin did a whoopity doo in the pool and now the water is brown.
I did a whoopity doo in the car and the whole class got sick.