Answer:
What is bought by the yard by is worn by the foot?
I run through hills. I veer around mountains. I leap over rivers. And crawl through the forests. Step out your door to find me.
I look at you, you look at me, I raise my right, you raise your left.
The man who made it didn't need it. The man who bought it didn't use it. The man who used it didn't want it.
I never was but always will be. No one ever saw me but everyone knows I exist. I give people the motivation to better themselves every day. What am I?
What did the piece of wood say when he saw the screwdriver and screws approaching?