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1.
A priest who is a homosexual. A priest who seems like a homosexual. A priest who participates in sexual acts with other men. A term made famous by Brain Kinney off Queer as Folk. Someone who seems very holy, but still fucks other men.
" I swear today we're getting lectured by Reverend Buttfuck today about how to have safe sex with another man." The boys who are saying this assume that the priest is a homosexual."

" Man, Reverend Buttfuck was great in bed last night."
by BEATNGUFAN February 03, 2006
 
2.
A gay Priest who is in the closet about his sexuality. Used as an insult. Word made famous by Brain Kinney from Queer as Folk.
" I swear my mom's priest is Reverend Buttfuck the way he kept cheaking out my ass!"( a guy is saying this)
by BEATNGUFAN February 03, 2006