I once heard the song "Secret" by Madonna and thought that the line "Happiness lies in your own hands" was "A penis lies in your own hands". Let's face it, it was Madonna!
A childhood belief about misheard lyrics

others believed things like this
- I used to think that the song "My Bonnie Lies Over the Ocean" was really "My Body Lies Over the Ocean."Anon
- I use to believe that a "Prima Donna" was "Pre-Madonna"---someone before Madonna's time.
— Lacey S - i thought the line "saving my face" from the KT Tunstall song of the same name was "shaving my face"Anon
- If you had a mouth ulcer it's because you've been telling lies.— David Smithers
- When i was child i used to believe that if you tell lies your nose grows.Anon
- I used to believe rabbits could lay eggs. See what Easter is doing to our children? lies! lie I tell you!— Kitty Kat