A sex-position performed, perhaps exclusively by heterosexual couples, when the male clutches his partner by the respective butt-cheeks to command the rhythm of thrusting. Typically, the female's arms are wrapped around her partner's neck or head as if she were transporting a pumpkin.
Dave: "Fuck, my fucking arms KILL! Can you copy these notes for me?"
Jerry: "Carpal tunnel syndrome?"
Dave: "Naw ... I jock-bonked Stacy all night last night."
Jerry and Dave: "Hahahahahahahahahaha"