ballbatting
The act of taking a baseball bat and hitting someone about the knees, shins, ribs, head, or any other part of their body, in order to extract some cold-blooded retribution. Usually practiced by the mafia (or angry dads who just found out their daughters got boned by a dude they disapprove of) or anyone who wants to make a quick statement loud and clear.
Did you hear those c***suckers got what was coming to them? Vinnie just got back from ballbatting their knees after they ducked him for more than a year for the 5 grand they owed him!