The priest costume shows the clergyman in black cassock with an erection. The nun costume shows her in full habit and pregnant. Anyone who wants to buy a costume with a rabbi or imam sporting an erection is out of luck—there are none available. There are also no vulgar Jewish or Muslim women costumes available. Just ones for nuns.
The most prominent store selling the offensive priest and nun costumes is Spirit Halloween; they have stores throughout the nation and have a big online following. The store even says of the priest-with-an-erection garb, “Pair this mens [sic] costume with the Pregnant Nun for some really twisted fun.”
Contact the illiterates at: GuestServices@spirithalloween.com