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 28, 2010
Get the Beefneckmug. reaction to when someone says something stupid, you slap them on the back of the neck while saying "beefneck"
by willy_j_33 October 19, 2010
Get the beefneckmug.