Cum smack Share definition Flag The act of a man jizzing in his hand and smacking a girl so hard that your hand sticks to her face and her face turns beat red, and covered in cock butter Dude that bitch cheated on you. She deserves to get cum smacked. Cum smack by Godj375 March 3, 2011 0 0 Get merch Get the Cum smack mug. Buy Now — $32.95 See more merch