Answer:
Name for zenith
You will find me with four legs, but no hair. People ride me for hours, but I don't go anywhere without needing to be tugged. Jerked or turned on, I always manage to be ready for work.
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.
What letter comes next: O T T F F S S ?
You use it between your head and your toes, the more it works the thinner it grows.
What did the piece of wood say when he saw the screwdriver and screws approaching?