“As a sapphic Catholic, this is my Super Bowl,” says Gasp! The Pod host Hailey on the show’s latest episode. Very fortunately for Hailey and for everyone who loves tales of horny nuns (who doesn’t!?) her latest guest, Cherry Letter Club creator Yen, is am erotic medieval lesbian nun scholar of the first order. And before you say “wait, what are you talking about?” Yes, there is indeed a thriving genre of lesbian nun erotica dating back to the 12…