Take the pizza delivery sign off the roof
or
A watch dog.
or
Parachute school!
or
Five. One to change the bulb and eleven to say they could do it faster.
or
50. One to screw in the light bulb and the remaining 49 to guard him .
or
First they have to agree on which is better; the analog bulb or a digital bulb.
or
One; after reflecting in the twilight on the merit of the previous bulb.
or
A porcupine with split ends
or
Five. Four to decide which way the bulb ought to turn, and . . .
or