After applying copious amounts of vaseline to an erect penis, a friend crouches down, leaning over, whilst standing (like a chicken.)
At this point you jump off a platform , eg a bed, and aim for the person's ass.
Most of the time you arent succesful, but if you are - bummer for you!
Great fun at a stag weekend, or frat party!
My fiancee is away on his stag doo to newcastle, i hope he doesn't lose when theyre playing boner chicken!