My little sisters used to sing about the "Muncho Man" (Macho Man by the Village People) and the opening lines to the Bugs Bunny show was "Over shoes, Candlelight" instead of "Overture, curtain, lights". They sang the words so loudly I could never get them to hear that they were wrong.
A childhood belief about misheard lyrics

others believed things like this
- I used to belive that if I put my finges in my ears when i sang noone could hear me— Helen
- When Madonna sang "let the choir sing" in "Like a Prayer", I thought she was singing "love by proxy"— Kristen
- I used to think that the actors on tv shows sang the show's theme song.Anon
- Until I was about 15, I beleived my Father was the person who sang the "Cheers" TV Show Theme Song.— Dustin
- Olivia Newton John did sing let me hear your budgie talk! didn't she— J Scull
- i used to believe the easter bunny was my bunny that a fairy turned real.— Twix