butt goon Share definition Flag a joking insult. something you call one who is being a doofus.bunghole buttmunch doofus putz fartknocker poophead Hey Shana, stop being a butt goon!!! butt goon by buttgoon August 3, 2016 0 0 Get merch Get the butt goon mug. Buy Now — $32.95 See more merch