Goon Share definition Flag A "Goon" is a crazy ass motorcycle rider who just wants to have fun and ride and is probably adrenaline junky and hits huge ass jumps. " Bro did you just see him hit that tripple? That dudes a fucking Goon." Goon by YZ_Kid. February 25, 2018 0 0 Get merch Get the Goon mug. Buy Now — $32.95 See more merch