A Bro-No is an act that occurs when one male commits an act that is harmful, distateful, or generally disrespectful toward one of his other close male friends (henceforth; 'Bro'). The term can be applied to both the ACTION of the Bro-No, and the Bro-No itself as an entity.
"Kyle totally wrecked Tom's car last night. What a Bro-No."
"I just made the biggest Bro-No! I made-out with Julie last night and she is still dating Dave!"
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