Top Definition
When one bro reveals overly personal information to another bro.
Stems from the generally accepted principle that personal discussions between bros occur on a need-to-know basis.
Guy 1: Hey man, remember that wart on my dick I was telling you about? I went back to the doct-

Guy 2: Dude, what the fuck?! Brovershare!
by Amylest February 23, 2011

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