One. But he doesn't screw it in, he just holds it and the world revolves around him.
Bingo!
Five: One to do it and four to tell you how they did it on the last job.
Two. One to change the bulb and one to sing about how grand the old bulb was.
Two. The light bulb you remove and the light bulb you replace it with.
One: He holds the bulb and the rest of Canada revolves around him.
Just one. He holds up the bulb and waits for the world to revolve around him.
One narcissist. The narcissist holds the lightbulb in the socket and waits for the world to revolve around him.
Just one. All he has to do is hold it in place while the world revolves around him.