When a man shaves his pubic region while saving the pubic hair, then proceeding to ejaculate on a females face, he then slaps her in the face with the pubic hair causing the hair to stick to the ejaculate on her face. The man will then proceed to slap her in the face with his erect penis.
Bobby: I gave your mom a Gorilla Slap last night! Now she has a fucking beard!
Josh: hahahaha, my mom's a bitch anyway!