Just one, but he'll also want to do something about your nose.
or
To log on.
or
If one side has one, the other side has to get one. Once launched, they cannot be recalled. When they land, they screw up everything forever.
or
No one knows. Republicans automatically disbelieve him, and no one can ever trust a stinking liberal anyway.
or
Finding a cabinet position for the thing on his head!
or
Answer: The back of his head.
or
In the dictionary.
or