A friend of mine from college went with his roommate back to Hawaii for spring break. He ended up going to a Mormon church for the hell of it, he was that way, and when he returned he was obviously on their radar for conversion because they kept sending missionaries to his dorm room. He was in no danger of conversion but he used to invite them in just so he could argue with them. He spent a lot of time keeping those boys from talking to more susceptible people. :)