Blow up
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A blow-up is a diffuse term for any bad or dumb move where a player suddenly and uneccessarily loses a large sum of money. All-in bluffs and hyperaggressive moves against an opponent who clearly has a better hand are blow-ups. A player throws a ton of chips into a hopeless situation, often because he's on tilt. The pro poker player Mike Matusow is famous for his blow-ups, also called "Mike Matusow Blow-ups", since he tends to blow his winnings accumulated over a long period of solid play in one deft and catastrophic blunder.