I used to love Elvis when I was a kid and I only realised last week that the words are actually "hard-headed woman been a thorn in the side of man... Ever since the world began", not, as I used to sing very loudly, "hard-headed woman with a hole in the side of her head... Ever since the waffle began."
A childhood belief about misheard lyrics

others believed things like this
- I used to be convinced that there were bald-headed beige aliens outside my toilet window.— Phil
- I thought the ball-headed person in the Bic logo was an alien and communicated using alien-like noises.Anon
- I used to believe that if you farted really hard, you could fart a hole in your pants. How dumb was that?— stargirl
- I used to believe that if I chewed on one side of my mouth too much the other side would get jealous.Anon
- i used to believe that everyone had a twin on the other side of the world.— tahnee
- I used to think that there is another world on the other side of the mirror, where everyone is named Philip.Anon