Pustle-gut Share definition Flag (old slang)and pus-gut 1. a protruberant belly 2. a person with a protruberant belly You would look a lot better without that pustle-gut. Pustle-gut by Light Joker April 9, 2004 0 0 Get merch Get the Pustle-gut mug. Buy Now — $32.95 See more merch