A term for a group sex position formed when four guys penetrate a girl at precise angles.
The term is commonly used by millennials and leaves Randy in a state of confusion and distress.
Gene: "Yeah, man. That's when you hit her with the quadrilateral!"
Randy: Quadrilateral??? What is that???"
Joe: "Hell Yeah! The quadrilateral! Works everytime!"
Randy (Losing his mind): "Quadrilateral??? What the fuck are you guys talking about!!??"