When I was a kid, I went to a Catholic elementary school, and we'd have mass where we all to sing hymns. There was one, I think it went "Go tell it on the mountain", but I always heard it as "Goatillet on the mountain" and imagined a goatillet as a strange goat-like creature standing on a mountain top. I always wondered why anyone would write a song about that, and what it had to do with religeon.
A childhood belief about hymns

others believed things like this
- I used to think that the chorus of "mountain song" by jane's addiction was in a different language— nothing'sshocking
- I was convinced that hot air sinks. Why else are mountain tops cold, and Death Vally is so hot?— Not-my-wife
- I used to believe that when I went to the mountain I would find an ancient monster or find some treasure— Yazer Solorzano
- I thought the Mountain of Olives was made out of Olives— Tanuki
- I am Catholic. I used to believe that the Father presenting the Mass was in fact God himself.— Lindsey
- When I was in elementary school I use to think that teacher lived at school at their desks all year long.Anon