When my dad was young his mum told him that if he ate turnip his skin would heal really quickly because he had a big cut on his knee.
He believed her.
A childhood belief about general

others believed things like this
- When I was a little kid and fell down and skin my knee, I used to think I was skinning my kidney.— G. Dedrick
- I used to think that your knee cap was called your knee ball.— Erika
- I used to believe that if I pumped in my sleep and breathed it in I would turn into a rotting turnip!— Quako
- I used to believe that if your arm got cut off it would heal/grow back.Anon
- When I was young I thought that police had soft skin, because this is how it sounds in French " Peau lisse "
— amine - In 'Call Me Maybe', I misheard 'Ripped jeans skin' as 'Rich cheese skin'. — Carly Rae Cheddar