1 definition by SEXC BRO

Top Definition
When a group of bro's begin to fist pump so hard that a whirl wind begins to form and then from that, a Bro-nado rips through the party.
Me and all the bro's on my team were fist pumping so hard that we had a B-4 Bronado rip through the whole party. No quit.
by SEXC BRO May 09, 2011
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