donkeybutt Share definition Flag A girl with a big ol'ghetto booty. Makes me want to whip it out and nail that ass on the spot. Damn, look at that donkeybutt! who is that girl? Her name is Jessica and she works at the gas station. donkeybutt by floyd November 30, 2003 0 0 Get merch Get the donkeybutt mug. Buy Now — $32.95 See more merch