I loved the song "Flying North" by Thomas Dolby as a kid. When I was about nine I was listening to the song one day and it suddenly struck me; there was a bad word in the song! The line was "N*ggers steaming in the chilly air of the morning." I was so shocked, I couldn't stop crying. However, on further listen, I concluded that the word must have been "knickers" to make "Knickers steaming in the chilly air of the morning." Ahh, I was a lot happier after that.
(It's actually "Lincoln".)
A childhood belief about misheard lyrics

others believed things like this
- When I first heard Bruce Springsteen's song, "Born in the USA," I thought that the song was "Porn in the USA"Anon
- i thaught the michael jackson song billy jean song said Janet's not my son Anon
- I used to think that the song"Stayin Alive" said "Staying In Line" like at school when I was little. — MacKenzie
- I used to think that the line in the song "Life in the Fast Lane" was "Fights in the Bat Plane".Anon
- 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