Gadsden Geiser
A guy plops his dong in a woman's twat and starts peeing while she's peeing, causing a giant pee gush from her.
He peed in her and she peed. It was a double pee attack.
They both peed like they were trying to drown each other in pee.
She was like, 'You're peeing in me? Really?' and he was like, 'You're peeing too!'