reaction to when someone says something stupid, you slap them on the back of the neck while saying "beefneck"
by willy_j_33 October 17, 2010
When someone says a gay joke, something stupid, or something that deserves to be punished for. You also say beefneck while slapping the back part of their neck. Beefneck is a way to say that something is dumb; some people confess and put forward their necks and get hit, voluntarily.
by Beefnecker November 24, 2010