I used to think that "Anxiety" by Pat Benatar had these lyrics: "Sometimes in the city, sometimes in my car, I pound on the windows, I could pee inside a jar."
Found out years later that it was "like a bee inside a jar". D'oh!
A childhood belief about misheard lyrics

others believed things like this
- I used to believe that mirrors were found inside rocks.— Optional
- The muppets were REALLY inside the T.V.!Anon
- I used to think that the people were inside the tv.Anon
- When I was a kid, I though the people were actually inside of the TV set.— Tom Davis
- I used to believe there was nothing inside our bodies when I was about 4.— Connie
- I used to believe that the people inside the television could see you. Anon