Garfblat
A word or expression which makes the one hearing it want to punch the person saying it in the face, kick in the balls (if present), poke in the eye (only on tuesdays), or fuck their mom (only if their hot, and only in public restrooms at the metro), or simply vomit.
Guy 1 "Dude, thats like as much fun as riding a tractor...in a field"
Guy 2 " You just garfblatted, wheres your mother?"
Guy 2 " You just garfblatted, wheres your mother?"