I used to think the lyrics to "Venus" were "I'm your fidas, I'm your fire, and George 'n sire" instead of the actual lyrics which are "I'm your Venus, I'm you fire, at your desire."
A childhood belief about misheard lyrics

others believed things like this
- I thought venus fly traps are from the planet Venus— Ted Snow
- Actual lyrics: "I've never been your beast of burden"
My lyrics: "I've never been your big suburban"
— Big Suburban - I used to believe that Venetian blinds came from Venus.— Valerie
- I used to believe that if you put your hand in a venus fly trap it would eat it.Anon
- I used to think that Bananarama's song "I'm You Venus" was "I'm Your Penis"Anon
- I believed a star that I later found out was the planet Venus was the Tooth Fairy— Jillybean