Used by Infantry Marines, a almost direct synonym for "beat the shit", commonly used in relation to physically assaulting another member of your platoon; usually a buddy.
Ex. Marine #1: Hey, is that a picture of your girl? She's hot! Have her call me if she ever gets lonely.
Marine #2: Shut up before I beat the mess out of you, Kid!
Marine #2: Shut up before I beat the mess out of you, Kid!
by MirrorChaser January 15, 2015