In that 80's song "Don't You Want Me", it goes in the chorus, "Don't...don't you want me? I know I don't believe you when you say that you won't see me". But I thought they were saying "When you say that you DON'T see me" so I thought it was about this girl who tried to tell her boyfriend she was blind, but he didn't believe him.
I wondered how she could be a waitress at a cocktail bar then.
A childhood belief about misheard lyrics

others believed things like this
- I used to think that the chorus of "mountain song" by jane's addiction was in a different language— nothing'sshocking
- I swear I heard a Disney Channel/Radio Disney song where the chorus was a repeated “Damn it”— SpengBab
- i thought in elton john's "tiny dancer'' the chorus was "hold me closer tony danza"— d.a.
- I thought the song Shattered Dreams was acutaly "Shadow Dreams" and wondered what shadow dreams were— Golgademon
- Phil Collins song "I missed again" - I thought it was "I pis*ed again" - didn't realise he was an alcoholic?!Anon
- I used to believe that blind dates were dates for people who were blind.Anon