Because there's no one else to wag it for him.
or
Two. One to assume the ladder and one to change the bulb.
A': None. If the government would just leave it alone, it would screw itself in.
or
Ah-choo-choo!
or
Its days were numbered.
or
Because sometimes you can get rid of cancer.
or
Because there's no one else to wag it for him.
or