Nothing, it shuts them up!
or
Anywhere it wants to
or
It was beat.
or
Neither, they all burn shorter.
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
One. No, two. No... How many do we have on the truck?
or
One is a blood-sucking parasite, the other is an insect.
or