I used to think Cher's song "Half- Breed" really was saying "Heffrey!" I thought that was a new name, sort of like a variation on Jeffrey, that Cher was making up.
A childhood belief about misheard lyrics

others believed things like this
- I used to think that Cher really WAS a gypsy and a thief and some kind of egyptian ruler.— Piper
- I used to think an Afghan hound was a breed of terrorist dog that had to fight in the Taliban!Anon
- I used to believe that your belly button was what held your top half to your bottom half...— Debelouwho
- I believed that the breed of dog called Boxer was called that because they could stand up and box.Anon
- I used to think that a company had boats all over the world making waves, and airplanes making cloudsAnon
- when i was4 and a half i thought i would be 5 feet in kindergarten— Katrina S.