Two. One to take out the bulb and drop it, and the other to try and sell it before it crashes (knowing that it's already burned out).
or
if you mess with the United States, there will be hell toupee."
or
I just found the Bush that Jeb lost."
or
"Let me see your birth certificate".
or
One's a spineless, poisonous blob. The other is a form of sea life.
or