Five. One to hold the bulb, two to spin the table beneath him, and the other two to spin the table in the opposite direction to make sure he doesn't get dizzy.
Bonus: How many superintendents does it take to screw a lightbulb?
Just one, because he's smarter than ordinary policemen and knows that the Earth spins by itself.
Many of the jokes are contributions from our users. If you find anything offensive and against our policy please report it here with a link to the page. We will do everything to make this an enjoyable platform for everyone.