Goat Mother Fucker Share definition Flag Whenever said, will win you any argument unless scientifically proven wrong. Bob: The Earth is flat. Tim: No it's not. Bob: Goat Mother Fucker. Tim: Oh dang, ur right. Goat Mother Fucker by ShREk 420 69 May 30, 2018 0 0 Get merch Get the Goat Mother Fucker mug. Buy Now — $32.95 See more merch