to lang; the act of stretching out your weenie (similar to jelqing) by crushing it with a heavy object, preferably with friends or accompanied by bad bitches.
Person 1: (enters room and sees Person 2 masturbating as Person 3 is on computer with headphones on)
Person 1 (later): Hey Person 3 I saw your roommate Langing it when you were in the room!!!
Adj - A versatile word used to describe. If something's banga langing, it's good BUT if someone's banga langing then they're considered a spicy little individual.