Top definition
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
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug