Occurs when a guy and a girl are having sex and the male proceeds to oral sex. During oral sex the male bites the girls clitoris, flips her over, and sticks his penis in her butt. While the man is doing this, he raises his arms to the top of his head and completes the appearance of a shark fin with his hands.
Guy 1: "Hey, I heard you shark attacked that girl last night."
Guy 2: "Wait, what did I do?"
Guy 1: "Shark Week!" *raises hands above head to create a shark fin*