When I was a nipper, I'd occasionally catch the end of Emmerdale Farm of Crossroads, and, once the titles had finished, there would be still shot of a novelisation and the announcer would say that the latest book was "available from all good book-sellers". I thought he was saying 'book-cellars', and that you could only buy these in bookshops that were underground.
A childhood belief about tv

others believed things like this
- i thought that we were just a big story book that ended when we died— samantha
- I thought Kaa's name from The Jungle Book was spelled "Car" and that he had a brother named Truck.Anon
- I used to believe if you read a book in the dark, you would go blind.— Ellen
- I believed the book Babar was how my name was spelled.— Barbara
- I used to believe that copying definitions out of a book counted as plagiarism!Anon
- I read in a book that if you ever swallowed toothbrush bristles then you would get appendicitus!— Amy