I was told by my mother when I was very young that I wasn't allowed to drink coffee because it would make you turn black (this was back in the day when being prejudice was very common. I never could figure out how babies got black.
A childhood belief about skin

others believed things like this
- When I was little my dad told me that if you drank too much coffee it would make your skin turn black. Anon
- Drinking coffee before your 12 yrs, old will make the white in your eyes turn brown.— dawn b.
- I thought black people were black because they drank chocolate milk. — Shelby
- When I was little I thought that black babies who were breast fed got chocoate instead of white milk.— Susan
- When I was young my mother told me that old people kind of shrink. I thought that they shrunk into babies.— dont know
- When i was a child, i used to believe that when people ate black beans, they became black— Mar'ia Elena