a term used to describe a known 'self proclaimer' or other person who like to talk themself up.
The term is derived from the name of 'Bishop' Brian Tamaki, leader of New Zealand's Destiny Church, who had himself proclaimed as a Bishop by other self proclaimed Bishop Eddie Long.
Wilhelm: man did you hear Klaus going on about how many girls hes had sex with?
Johannes: Ja! hes such a Bishop brian, we both know hes still a virgin cock swaddler!
Wilhelm: I know, what a little gooch assasin!