A wrestling move made famous by Billy Gunn, technically referred to as the Leg-Drop Bulldog.

It involves pushing the opponent into a stance where they're bent 90 degrees at the hips, then jumping, wrapping the back of one's knee on their neck, then letting gravity do the rest. It is a powerful facebuster-type move, sometimes done as a springboard and is a definite setup for other ground-based moves since it leaves the opponent prone, face down.