Saying Mormons belong to a cult is pretty rude, even if that's how truly feel. I simply say; "Thank you, but I am not interested." If that doesn't work, I ask them to wait a minute for my husband to return.
How funny that you think it's rude. I have been told I worship a zombie, and things I wouldn't even type here, because I'm an evangelical. I have prayed before on the street and been called things that almost curled my hair--and my hair is not curly. Believe me being told "I am in a cult" wouldn't even bat my eye. I mean just in THIS THREAD someone told me they "have no use for evangelicals".
I do know you to be a very polite poster and I appreciate that. I hope not to be blatantly rude, but yes, I put Truth even over politeness. I do not seek to build bridges with someone if their soul is at stake.
Penn and Teller, atheists, said this once. They said, listen, if you REALLY believe I'm going to Hell, are you being "nice" to me if you don't tell me? Is that really kind?
If I tell Mormons they're Christians just like me so they feel lulled into that "niceness"--but I don't really believe that--what have I accomplished? well they feel good, and I feel good. But that's the worst kind of lie if you believe what I believe. It's not "that dress makes you look fat" lie. It's an "eternal soul" kind of lie.
I will sacrifice politeness for that. Especially I will if people come to me with a message. I will then give them MY message. Because I really do not want to see them perish. :-(