The man says: "You go up there and tell him off. Go on, I'll hold your monkey for you."
or
A whole synod. One to move that the bulb be changed while the others debate until the room spins.
or
None. The light bulb contains the seeds of its own revolution.
or
A sponge!
or
A pork chop.
or
Bike helmets don't fit hippos
or