That's two down motherfucker! Share definition Flag A term used to explain that you killed someone. Person 1: That's two down motherfucker! Person 2: What the fuck? That's two down motherfucker! by thatsqeqweqew December 29, 2020 0 0 Get merch Get the That's two down motherfucker! mug. Buy Now — $32.95 See more merch