The cleavage created by a fat man's man tits with folds of fat resembling a vagina. Title hails from the fact the guy breasts need a bra. a cross between the title "Brian" and "Vagina" familiar with piss off, irritate, or simply just make enjoyable of those named Brian. Usually familiar with stress vagina-likeness to a guy. Variants (John to Vajohna) can be implemented.