Top Definition
A scale used to determine how efficient of a bro a certain bro is. Bros with a high level of broficiency typically do things such as shotgunning beers, serving as excellent wingmen, and wearing wife-beaters with black hats.
Bro #1: Dude, so I heard Steve totally hooked up with an uggo just so you could get a piece of ass from that hot blonde last night.

Bro #2: Hell yeah bro, his level of broficiency is through the roof right now!!!
by shindig008 June 29, 2010

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