I have a good friend, a very high level executive in a international banking firm, that thought the lyrics to a song were "in a white room, with black cousins" when it's really "in a white room, with black CURTAINS!"
A childhood belief about misheard lyrics

others believed things like this
- I thought that old movies were black and white because the world was black and white then. — K
- I used to think that the old days were actually black and white because of the old black and white pictures.— Leigh Taylor
- When I was little I used to believe that black people saw in black and white. — Chelsea
- when i was litte
I used to believe that white people had white blood and black people had black blood.Anon - When I was little I thought that black babies who were breast fed got chocoate instead of white milk.— Susan
- When I was a kid I thought that when my parents were kids, the world was black and white and had no color...— KKM