Before I could read, I used to believe that movie credits were the book version of the exact same movie, so couldn't figure out why people who could read would stick around to see the film.
A childhood belief about films

others believed things like this
- I used to believe that the credits at the end of a movie was a list of people in that were watching it.— jon_
- If your first name is on the credits for a movie, you're famous.Anon
- when i was little i believed that when we watched a movie people had to act the movie all over a gen.
— Emmer - I used to beleive that in order to rewind a film the actors would have to re-act the whole movie backwards. — movies backward
- I used to believe if you read a book in the dark, you would go blind.— Ellen
- I read in a book that if you ever swallowed toothbrush bristles then you would get appendicitus!— Amy