You know REM's song "It's the End of the World"? The chorus says, "Can I have some time alone?" but I always thought it said, "Can I have some Tylenol," which made a lot of sense to me. If the world were ending, I'd want a LOT of Tylenol.
A childhood belief about misheard lyrics

others believed things like this
- I thought the world was black and white because of all the smoke from the bombs in Second World War.— Bjoern
- when i was young i thought that a giant made the world slowly spin!— ~kassie~
- Until a few years ago, I believed this was a "doggy dog" world, rather than a "dog-eat-dog" world.— jemima
- I used to think that the phrase "It's a dog eat dog world'' was its a dogey dog world.— Gabral
- I used to think that the chorus of "mountain song" by jane's addiction was in a different language— nothing'sshocking
- I used to believe that every country in the world had the same time. Guess I didn't consider time zones eh?— what are time zones again