Catlikker
noun: any person who is of Catholic religious denomination.
Lars: Dude, Olaf's goin' to church at eleven and isn't coming to the game with us.
You. "Dude, he's a Catlikker and he thinks it's a sin if he skips out."
You. "Dude, he's a Catlikker and he thinks it's a sin if he skips out."