Dumbass Share definition Flag Just an extremely offensive ass way of saying that a person is dumb. Person 1 : Your a fucking dumbass. Person 2 : How could you say that to our 0.5 second old child! Dumbass by teevee_xd May 1, 2025 0 0 Get merch Get the Dumbass mug. Buy Now — $32.95 See more merch