When I was waaay younger and un-interested in the beatles (quite the opposite of me today) I heard "While My Guitar Gently Weeps" on the radio. I thought that when George said "still my guitar gently weeps" he was saying "you steal my guitar, I gently weep.". For the longest time I believed that someone had stolen George Harrison's guitar, and I always asked my parents "where did George's guitar end up??". They didnt know what the hell I was talking about.
A childhood belief about misheard lyrics

others believed things like this
- i used to think air guitar was the same as electric guitar, i just thought air guitar was ran by air.Anon
- I used to think that air guitar was a style of guitar playing in rock music.Anon
- I used to think that an air guitar was a real instrument. I though it was a guitar powered by air..— Amanda
- when i was little i used to think that air guitar was an actual type of guitar!lol!Anon
- i used to think the air guitar was a real instument— allen
- I used to believe that God looked like George from Seinfeld. — Liz