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When a friend gets into a relationship and begins to not hang out with one of his guy friends as much as he did before said relationship. Friend spends most of his time with his girlfriend and not other friends. In other words: Anti-Bros before Hoes
Friend: Hey, why haven't you been hanging with John much anymore?

You: John got a girlfriend so he hangs with her all the time.

Friend: That's brotrayal man, sucks!
by Alejandro91 April 15, 2009
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1. To betray your bros. 2. The act of betraying ones bros
When that asshole told his friend I slept with his wife he committed an act of brotrayal.
by -PK- October 15, 2008
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