Green’s Dictionary of Slang

a Roman Catholic; also as adj.

1927		(con. 1900s) S. Lewis Elmer Gantry 105: It talks about bishops, and that means Episcopal bishops — the papes and the Methodists are uncanonical bishops.
1936		K. Mackenzie Living Rough 175: He’s a pape and she’s a prodistan’.
1940		D. Maurer Big Con 202: All grifters who are papes go to the kirk regularly.
1998		I. Welsh Filth 129: Rossi, of course. Italian. Pape.
2000		T. Udo Vatican Bloodbath 66: That’s the Papes fur ye. Fuckin’ Priest ridden superstitious cunts.
2009		L. McIlvanney All the Colours 84: ‘Gerry? You a pape?’.
2012		(con. 1980s) I. Welsh Skagboys 16: Please let him be awright proddy god pape god muslim god jew god.
2012		(con. 1980s) I. Welsh Skagboys 134: The proddies and the papes [...] distilled fae the dregs ay European Christendom’s most blood-simple white tribes.
2018		I. Welsh Dead Man’s Trousers 158: Ah’m likesay a pape ay Paddy stock.