12 banger Share definition Flag Alternate name for a 12 gauge shotgun. See also: 12-banger Homeboy got himself a 12 banger to smoke some gangsta fools. BOO-YAH! 12 banger by 12-banger April 30, 2008 0 0 Get merch Get the 12 banger mug. Buy Now — $32.95 See more merch
