Top definition
When a bro has no interest in a female due to his bro's past or present feelings for her.
Bro: Yo, you into that girl?
Bro #2: Nah dude, she's been bro-sidelined cause of Bro #3.
Bro: Shit man, I didn't know, I'll ease off then.
Bro #3: Thanks bros.
by TheWiggityWackOne April 24, 2013
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