look up any word, like tribbing:
 
1.
Punching oneself in the stomach in a crude and ineffective attempt to stave off hunger.
Ah man, I can't be fucked going to the kitchen, time for a boxers lunch.
by the oob November 27, 2004
 
2.
Feeding someone thier teeth. Intentionaly doing as much damage as possable with a punch.
Fuckshit, I'm gonna feed you a boxers lunch!
by Vidurr June 29, 2006
 
3.
A variation of knuckle sandwich.
Keep it up and you'll be eating a boxers lunch.
by pawntakesknightoff March 08, 2008