Just one, but they have to do it during dinner.
One. They simply hold the bulb and wait for the world to revolve around them.
One. ###And it's NOT funny!!!
A: A hundred but they'll all be competing to be the one to change the bulb and bring light to the world.
2. 1 to change the light bulb, the other to take pictures.
Fish and ships.
Bernadette ate all my dinner and now I'm starving !
One gets lots of annoyed hangups, the other has a lot of annoying hangups.