A word used to describe a worthless or stupid individual. Often, the "cunt flap" is guilty of something such as putting lip stick on a pig.
Guy 1: Hey, maybe if I shave my pubes my cock will look more manly.
Guy 2: Dude don't even try. You're fucking cunt flap.
Guy 2: Dude don't even try. You're fucking cunt flap.
by Mr. Kasey January 17, 2009