Faap Share definition Flag slang for the word masturbation. ( sound effect of when someone masturbates ) Dude I gotta faap really bad, or my penis will explode! ex. FAAP! FAAP! FAAP!.... is someone masurbating? Faap by I.R.-iot May 11, 2011 0 0 Get merch Get the Faap mug. Buy Now — $32.95 See more merch
