In early elementary school I thought "My Country 'Tis of Thee..." was "My Country Tisafee." I was under the impression that the U.S.A. could be called America or, I guessed, Tisafee. I even told a crush of mine named Tiffany that her named kinda sounded like our country's one morning in class... she gave me a rather puzzled look...
A childhood belief about misheard lyrics

others believed things like this
- I used to think that America was the only country that had cars.Anon
- I used to think wars started when a sergeant from one country socked a sergeant from another country.— recovering
- Until about age 9, I thought there was a country called "Operaland" where everyone sang instead of talking.Anon
- I used to think the Black Country region in the UK was called that because everyone lived in darkness there.— K
- The boy in my class named "Sahand" must have a sister named "Safoot".Anon
- I thought there was a different moon in every country.Anon