It takes two. One to change the bulb and the other to kick the switch.
Just one. He holds up the bulb and waits for the world to revolve around him.
Only one, but it take 4 episodes and Krilin died at the end.
2. One to change it, and another to shoot him and take the credit.
He ch-ch-ch-ch-ch-changes. (Sorry if repost)
None, they prefer Natural Light
Two. One to screw in the bulb and another to talk about how complicated it was.
A mormoff!
Switching Users
Kick him in the nuts.
He was caught playing with his broomstick.
He was just two tired.