U.F.Bro.

1.) 'Unidentified Flexing Bro'. Any unknown bro wearing a poorly-made 'muscle shirt' tank tops that exposes their arms and torso and precedes to flex in public places in order to compensate for the lack of muscle they really have. UFBro's are sighted with double faux diamond earrings, buzz-cut haircuts, and reek of countless, unnecessary protein shakes. 2.) 'Unidentified Flying Bro'. Any unknown bro that achieves flight through air due to being thrown during an intoxicated fight with other bros. UFBro sightings are usually in heavily bro-populated areas such as fraternities and college football games.