1 definition by primebeef

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

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×