lol i cant belive i missed this post nothing says winner like a pint glass in the chin
or you can simply walk away, then at a later time if your still pissed off go back jump on the guy and bite a chunk out of his face (eating it is optional)
always do a head count
the moral of the story you can be the biggest hardest man in the world and be knifed by some scrawny little smack head on the way home