To be abandoned on a crucial night by your bros.
Tony felt brobandoned Friday night when his bro V-Diddy ditched him at a house party.

Tony was brobandoned on Saturday night when none of his friends could come out with him and the girl he wanted to get with and her friends.
by tundra_wolf August 14, 2011
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The act of the abandonment of a "bro" at an event such as lunch or at a place like the mall.
Person 1 - "Justin totally brobandoned me at lunch today"
Person 2 - "He broke Bro-Rule Number 1, never leave a bro behind."
by xapollyonx February 20, 2009
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When one or more of your bros move away and/or get into a relationship, and/or start a new business venture, and do not hang out with you anymore.
Ever since Keith moved away, I have been having serious brobandonment issues.
by Lonnie Meters January 26, 2016
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