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1 definition by jeon, mike

 
1.
wearing one's frat letters in order to represent your fraturnaty. Activities include acting like you are better then everyone else or that you are "the shit", claiming you are the absolust best in beer pong, or that you can drink the most. This usually occurs between the ages of 18-24 and these people are commonly refered to as d-bags
*John walks in the room wearing a sweatshirt with three greek letters on it
Matt: "so are you bro-ing today john?"
John: "I sure am Matt!"
by jeon, mike May 12, 2008