I was amazed, I never knew they worked.
or
Two — one to change the bulb, and one to write a song about how good the old light bulb was.
or
Humpty Trumpty wants Mexico to pay for it all.
or
Woke up in the fireplace.
or
Two. One to hold the bulb and the other to rotate the planet.
or
None. The light bulb contains the seeds of its own revolution.
or