He holds it up to the socket and the world revolves around him.
By holding the bulb up to the socket and waiting for the world to revolve around them EDIT: Rip inbox EDIT 2: Thanks for the gold!
None. They just grab it and the world to revolve around them.
Because he was grounded! (I'll see myself out)
One to generate a "ChangeLightBulb" event to the socket.
One. They just hold the bulb in place and the world revolves around them.