Brass Knuckle Meat Pounder
I'll skirt the obvious meat pounder jokes here. I do see a pretty nifty dual purpose tool though. I've never tenderized meat before cooking it, but this looks like it might make the job sort of fun. And, if someone breaks into my home while I'm pounding my meat (I couldn't resist it I guess) I have the perfect self-defense weapon (other than a gun or knife... or any number of other weapons) right in my hand.