Bropostle
Derived from apostle; a dedicated bro of the highest order devoted to spreading the good word of broship.
Dude: Who is that man on a soapbox preaching exessively about Dave Matthews?
Bro(with a twinkle in his eye): That, my friend, is a bropostle.
Bro(with a twinkle in his eye): That, my friend, is a bropostle.