I'm picking "other" because I've had two people call me a "brah".
I'm assuming those two people would be josh and i. As i say it regularly, and josh has a habit of latching on to my leetsauce catchphrases.
anyways, brah is a hawaiian term. me being hawaiian.. i hear it regularly, in hawaii.. natives speak with their own terms (anti-american sentiments due to queen lilioukalani being overthrown by the us)
brah is the english equivalent to dude.
after having said that, which is way TMI.
i'm a guy. which means i have a *****!