Answer:
You use me from your head to your toes. The more I work, the thinner I grow. What am I?
What type of shoes do spies wear?
I am always around you but often forgotten. I am pure and clean most time but occasionally rotten.
The faster you run the harder it is to catch me
You use a knife to slice my head and weep beside me when I am dead.
When is it bad luck to see a black cat?