Twat-Knocker Share definition Flag when your man is going down on you and once he looks up to watch you cum you punch him square in the face. "Did you see Matt today ? his face is all busted; I bet his wife Twat-Knockered him" Twat-Knocker by singletracklife June 10, 2016 0 0 Get merch Get the Twat-Knocker mug. Buy Now — $32.95 See more merch