Peepee flaps

Peepee flaps are what you yell to your best friend when you are bored

Girl1: I am bored. Girl2: PEEPEE FLAPS! Girl1:lmfao

koala flaps

a piece of Kangaroo meat cut into the shape of "piss flaps" and then tried to be fed to the naive English Pommy

"Here mate would you like to try some BBQ'd Koala flaps"