Answer:
You use it between your head and your toes, the more it works the thinner it grows.
I have it, I don’t share it. If I share it, I don’t have it. What is it?
A dagger thrust at my own heart, dictates the way I'm swayed. Left I stand, and right I yield, to the twisting of the blade.
If you have it, you want to share it. If you share it, you don't have it.
When I’m metal or wood, I help you get home. When I’m flesh and I’m blood, In the darkness I roam.
What language does a billboard speak?
Difficult
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?