Dumb Bass Share definition Flag A worsen way to call somebody a Dumbass by saying they're as retarded as a Bass (Fish) running into a wall. "Harry is such a Dumb Bass, and it speaks a lot about him." Dumb Bass by CrimsonXVI December 30, 2018 0 0 Get merch Get the Dumb Bass mug. Buy Now — $32.95 See more merch