The first time I learnt our national anthem in english, I thought the line, "Some have come, from a land beyond the wave," was 'Some have come, from a land beyond the grave.' I thought they were singing about zombies or something!
A childhood belief about misheard lyrics

others believed things like this
- I used to think that
"The land of make believe"
was
"The land of baked beans."— Baked Bean! - I thought the England was EDGE-land but england was ENG-landAnon
- At one point, i thought that "Where the Sun Don't Shine" and "The Land of The Rising Sun" where the same thing— A. Brone E.
- When I was little, I thought the Indian princess on the Land-O-Lakes butter label was God or Jesus.— Butterflyzz
- I thought a tidal wave was acutualy a title wave because if the wave was big enough it had its own title!— Nate
- I used to believe that Finland was in the end of the world. Fin-land.— Francesco Delvecchio, Roma/Italia