For fifteen years, I honestly thought the kid's gospel song "Special Specialities" was called (and sung) "Special Special Yellow Cheese." My Dad picked this up one day when he was driving us to church and laughed about it clear through the sermon.
A childhood belief about misheard lyrics

others believed things like this
- I believed that the gap between the double yellow lines in the road was a special lane for motorcycles.— Joel
- Anyone else think that Emergency Exits were special exits for some celebrity called 'Emer Gency' to use?— Mark Yardley
- I thought I was such a lucky and special kid, because I was born on the exact same day as my birthday.— ricolarno
- I thought that a travel visa was a special credit card which was used for travellingAnon
- I used to beleive I was special.Now I know different.Anon
- I used to think that crust was a special coating put on the bread— Hayley