Donkey Punch - Banging a girl doggy style and then moments
before you cum, sticking your dick in her ass, and then punching her in the back of the head. This gives a tremendous sensation, but for it to work correctly, the girl must be knocked out so that her asshole tightens up.
If i should ever actually try sex with a fellow and he "donkey punches" me then for his health he had better be FAR away when i wake up again.