tittyfucker Share definition Flag n. one who fucks tits; more specifically a man who inserts his penis between (typically) a woman's breasts and humps away My friend Joe is one nasty tittyfucker; he had her on her back and he spewed on her face. tittyfucker by mackdaddy November 23, 2004 0 0 Get merch Get the tittyfucker mug. Buy Now — $32.95 See more merch