It waves.
or
Aye, Aye, Arr and the Seven C's
or
Sunday!
or
They both whine alot!
or
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 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