Talk to the nun and the priest. The nun really likes the sound of the priest. They could have some good time...
This is the low-spoiler guide for "Get rid of the catholic priest and the nun" puzzle in Lancelot's Hangover. Unlike in normal walkthrough, you get gradual hints on how to solve the puzzle. Click the big button below to see your first hint. If the hint contains a spoiler, you will be warned about it before clicking.