A history of dirt equals lower class.
But digging in the dirt creates dirty nails.
Warm baths dissolves the dirt and makes the appearance clear.
But you and I know that under every white potion of the finger nail is "stuff".
Stuff you scratch. Stuff you pick up. Stuff you transfer over your body and sometimes into your mouth.
Ingesting "stuff" into your body. Ecck!
But we stay healthy. We stay alive.
And still, I cringe if I have dirty nails.