I can't remember any really funny belief of my own. But we sent my eldest to a Lutheran Preschool and she came home with some confused ideas due to the language in the King James Bible. One afternoon she and her little sister were playing a game where she draped a over herself and chased her giggling sister. I ask what she was and she said she was the Ghost of Egypt. It took me a while to figure out that she had misunderstood "the host of Egypt." Beware the Ghost of Egypt it tickles younger siblings.
If there is a god, I want to believe that there is a god. If there is not a god, I want to believe that there is no god.