Just one, but first the tire really has to want to change.
A. because he wanted to help untie the human race.
Not that there's anything wrong with that....
A: Twenty. 1 to hold the bulb 2 to turn the ladder and 17 to be on the guest list.
They change into brrrrrro's.
Because the 'P' is silent
A psychologist pulls habits out of rats!
A tire.
An inner tuber.