When I first heard "Here I Go Again" by Whitesnake, I totally misheard the lyrics. When he says, "'cos I know what it means to walk along the lonely street of dreams." I thought he was saying, "'cause I know what it means to walk alone, the lord is free to greive." Listen to it, you might hear it too! I was like, whaaa?
A childhood belief about misheard lyrics

others believed things like this
- I, to this day, believe that when I can't sleep at night it means I'm awake in someone else's dreams... — Turner
- I thought that the "don't walk" sign at crosswalks meant to run across the street as quickly as possible!— richard
- I used to think the song "Walk this way" by Arosmith went horse and sleigh insted of singing walk this way.— Derek
- my mom believed when she was little that a street sign that said don't walk meant you better run.— Sara Mclen
- I used to believe you could walk on clouds. And you would be able to walk in space on the edge of the world.— Alex
- When I first heard Stawberry Fields Forever, I misheard the lyrics as Strawberry Fields For Trevor.— Matt