A sexual act between a man and a woman wherein the man defecates directly into a woman's vagina. The man then uses his balls in a slapping motion to pat the feces into the vagina. Not pleasurable for either party.
You begin my inserting your erect penis into a girls ass. You are digging in their to pull out a "clump" of shit, to leave on the tip of your penis. Then lay on your back and pull your dick to your belly button, and launch the shit clump like a catapult on to your girls face.