With tomato paste.
or
A whole synod. One to move that the bulb be changed while the others debate until the room spins.
or
The strange charm of a top down bottoms up.
or
Two — one to change the bulb, and one to write a song about how good the old light bulb was.
or
Bike helmets don't fit hippos
or
None, because they were copycats
or