Motherfucker Share definition Flag A fucker of a mother or many mothers. One who has offended another person while receiving the insulting title of being such. Hey Motherfucker, get the fuck out of my car. See what I did there? Motherfucker by Solowshine June 21, 2013 0 0 Get merch Get the Motherfucker mug. Buy Now — $32.95 See more merch