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Man boobs. A guy is said to have gynomasties when his chest is flabby and resembles a females chest.
Matt always teases Scott when they are at the gym: "Dude, you need to do more cardio, you are getting gynomasties!"
by primebeef September 16, 2008

Words related to Gynomasties

flabby chest gyno-masties man boobs man tits tits