Answer:
I get wet when drying. I get dirty when wiping.
What comes in many different sizes but is always only 1 foot long?
I am always around you but often forgotten. I am pure and clean most time but occasionally rotten.
I am a precious stone, as clear as a diamond. Though you can walk on water with my power, try to keep me, and I'll vanish in an hour. What am I?
I have two bodies joined together as one. When standing still I run and run.
How can you tell when a mummy has a cold?