Braah
Okay so everyone is talking about with Hawaiian slang or jerks that are too lazy to even say bro, but NO. They are all wrong. This is just part of the Hamilton Musicals vocabulary, and should only be used in that context.
“BRAAH BRAAH I AM HURCULES MULLIGAN”
“They’re battering down the battery check the damages- BRAAH” ((examples from “Right hand man” and “Aaron burr, sir”))