In the Green Day song "Boulevard of Broken Dreams" there's a line that goes:
"My shadow's the only one who walks beside me"
I thought it was:
"No child's the only one who walks beside me"
I could not quite figure this one out. I thought it might mean that the only one who walked beside him was an adult...or maybe not...i was very confused until i found out the correct lyrics.
A childhood belief about misheard lyrics

others believed things like this
- I thought the song Shattered Dreams was acutaly "Shadow Dreams" and wondered what shadow dreams were— Golgademon
- When I was a child, I thought that grown-ups were adult.— Gloria
- My mum always thought the lyrics to macy grays song was i try to say goodbye to my chook.— alana
- i thought split personalities were like having dreams. the dreams i had were all my personalities!— Odd Dreamer
- i thought the line "saving my face" from the KT Tunstall song of the same name was "shaving my face"Anon
- I thought the line in the song "more than a woman" was "four-legged woman".— boo