sackabush Share definition Flag asshole, loser, dumbass--One who displays a high level of idiocy or stupidity, especially in interpersonal matters. Tood smoked my last joint. That fuckin' sackabush. sackabush by Darryl X. December 15, 2004 0 0 Get merch Get the sackabush mug. Buy Now — $32.95 See more merch