Sporting term: Poker.
The act of hiding a portion of your chips in a pocket while playing l Poker then going 'all in'. Then, after you lose, taking the concealed poker chips from the pocket and placing them on the table like nothing happened.
Paul: "Hey Pat, didn't Ben go 'all in' and lose just a minute ago?"
Pat: "Yeah he did but he's Nooching again."
Paul: "Goddamnit i hate it when he does that."