He holds it up to the socket and the world revolves around him.
Only one. She stands with the bulb and the world revolves around her.
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!
If you know the number, you don't know where the socket is.
Zir holds it up to the socket and waits for the world to revolve around zirself.
One. They just hold the bulb in place and the world revolves around them.
