I used to think in Nirvana's song "Smells Like Teen Spirit" The line "A mosquito, my libido!" was "I'm afraid of, Albino!" I sung it out loud like that numerous times.
A childhood belief about misheard lyrics

others believed things like this
- I used to believe vanilla were albino chocolate.— Alexa
- I used to believe that mosquito larvae were baby hammerhead sharks. Made the ditch a very dangerous place!— Karen
- 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
- in kindergarden i beleived that to be a teenager your name had to end with teen— eric
- i thought the line "saving my face" from the KT Tunstall song of the same name was "shaving my face"Anon