Flopper Cocker

A Flopper Cocker is someone that likes to flop their dick on other peoples belongings. Flop Cocking is mainly used to assert dominance.

Guy 1 "Hey, did you just flop cock my scooter?"
Guy 2 "Yeah, you deserved it."
Guy 1 "You're such a flopper cocker."
Guy 2 "Okay... And?"