Punching someone in the back of the head may lead to serious brain damage and even death.

Donkey punching involves the male punching the sexual partner in the back of the head during anal or vaginal sex prior to orgasm, to provoke a shock causing the vaginal or anal muscles to contract around the male's penis.

The move can be prosecuted as sexual assault and even rape in the case of surprise anal penetration.

Every hear of asking? No need to punch a woman to get her to squeeze your dick with her asshole. Just ask, you'd be surprised what you might get. You'd be surprised what you might not get too: a charge of felony assault, hard time, and maybe even a Lorena Bobbit.

(Pertaining to the classic videogame Super Smash Bros.) When Donkey Kong unleashes his maximum power punch in the face of an opponent.

The melee attack with the plasma pistol in Halo 2.

Verb. Noun.
Whilst participating in either vaginal or anal ‘doggy style’ intercourse, during the instant before the male ejaculates, the penis is inserted (or kept) in the female's anus, at which point he delivers a swift punch to the back of the female’s cranium. This results in the simultaneous contraction of the anal sphincter and various other muscles in the female, thus producing a tremendous sensation for the male. However, for the technique to render successful, the receiving party must be knocked utterly unconscious.

The Call of Duty Move originally done by xbox live gamer tag Snatchier Pigeon and Ballboy007

This move is when you prone or crouch behind a teammate or enemy and knife them in the back while yelling "DONKEY PUNCH!"

This can be used to annoy teammates or simply get revenge on annoying teammates

A very well hit softball