A Blaikie
A big, smelly chunk of dirt that lives on your junk when you're too lazy to wash. It smells like old socks and regret.
He had a Blaikie so big it looked like a cheeseburger on his toe.
She found a Blaikie in her sock and screamed like a banshee.
My dog licked my foot and ran away because of the Blaikie.