Just one. To threaten suicide if you don't change it for him/her.
Answer is 2. One to change the lightbulb while the other screams "REPOST"
I don't know, but it must be an odd number because, "they can't even."
A: Five. One to handle the bulb and 4 to contemplate how David Sanborn would've done it.
Only one. But they have to sit in the dark room for a year, first, to make sure that the lightbulb is out.
One to change the lightbulb and one to drive down to Kent to pick him/her up.
Ask him/her to pronounce unionized