As a young, näive white boy growing up in a small town in northeast Ohio, I used to think that when someone shook the hand of a Black/African-American/Colored/Negro person (this was back in the 60s, ok? -- edit if you must!), that the color would somehow come off their hand and stick on yours, though I was certain that it could be washed off.
A childhood belief about skin

others believed things like this
- I thought that all black people were African-AmericanAnon
- I used to believe that african american people were black because they ate too much CoCo Puffs— Jessica
- that if you stuck out your tongue at your mother, your hand would stick up out of the grave when you died.— Elaine. London
- I used to think that my right hand wasn't my right hand anymore if I turned around.— Mike
- When I was small, my brother would bug me and say that if my hand was bigger than my head, I had a tumor.Anon
- I used to believe that before color television, people only saw in black an white.— CD