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The 2 or 3 random bro's that always show up at your party due to the overflow of bro's at other parties. Also known as "BrOver Flow"
Friend 1: Who are those random bro's that just came in?

Friend 2: Oh, those are just the Bro Overflow.

Friend 1: Bro Overflow?

Friend 2: Yea, the left over bro's. There was too much overflow of bro's at all the other parties.
by RickRob -- Travisaurus May 26, 2011
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