Stupid ass dude Share definition Flag One who has done something that could be thought of as stupid or thoughtless or just fucking Funny as hell (Kid1 jumps off a roof onto a car while drunk) (Kid2:"you stupid ass dude Stupid ass dude by K-town July 19, 2004 0 0 Get merch Get the Stupid ass dude mug. Buy Now — $32.95 See more merch