When I was little my parents told me that if I didn't eat my potatoes I would turn green. That's why martians are green because they don't have any potatoes on mars (of course!).
A childhood belief about general

others believed things like this
- My grandpa and mom both used to tell me that if I didn't clean behind my ear that potatoes would grow there. — Bryan M.
- my parents used to tell me and my sisters that if we ate our vegtables our eyes would turn green..— alex t
- When I was little my big brother told me that if I ate raw potatoes my teeth would grow curly. — Lauren
- I used to think eating raw potatoes would give you "BEZORES".
Our family doctor told me this— Moodycop - I was told that if i didnt wash my hair regularly it would turn green— Mimi Screami
- I used to think potassium came from potatoes.Anon