The sexual act/assault of punching a Gilf (grandpa or grandma ) you are mounting up the ass in the back of their head, causing both their rectum to spasm and contract pleasurably around your member whilst simultaneously sending their dentures flying out of their facial orifice. See Donkey Punch
My Goth, Daefith, can yoof see wheh you sendth ma tehf??
When fucking a chick in the ass, you nock her unconcious with a blow to the back of the head (donkeypunch) and pull out and come on her back and throw the sheats over her (superman) so they are "comeglued" to her back when she wakes up.
Same definition as Donkeypunch with the exception that it is performed at the top of a staircase, and when you deliver the punch, the giver pulls the receivers arms back and rides them down the staircase-like a toboggan.
"Your mom was giving me some attitude during anal, so I gave her a toboggan donkeypunch."
"I swear to god the next time someone tips 10% on a $500 tab, I'm going to toboggan donkeypunch their whole family."
A action used during "doggy-style" anal-sexual intercourse. When a man's penis is in a man or woman's asshole, the man shouts "Donkeypunch!" and when the man/woman turns around he punches him/her in the face causing his/her asshole to tighten making the sexual experiance a lot better for the man Donkeypunching his partner.
A variation on the donkey punch in which, instead of merely striking the receiver, the dominant party snaps their neck 180 degrees, severing the spinal cord and causing death spasms -- with the added bonus that, mid-orgasm, they get to see the life fade from their partner's eyes.