It is the same concept as the original "donkey punch," but with a twist. During Anal sex just before ejaculating instead of the obvious knuckles to the back of the head have any weighted object on a high point above the recievers head and give it a lil nudge. Thus causeing the pain which tightens the anus. The best part about it is she will never know, and you can avoid the process of police intervention.
by Zak A September 07, 2006