Horse Hair Motherfucker Share definition Flag A slur for someone of Mongolian descent Bob: He's a horse Hair motherfucker.Jack: how do you know? Bob: look at his eyes jackass Horse Hair Motherfucker by SawyersRus December 29, 2023 0 0 Get merch Get the Horse Hair Motherfucker mug. Buy Now — $32.95 See more merch