A: None. The sockets all went with the house.
You can unscrew a lightbulb.
To get to the other side.
None. They'll just stand in the dark talking about how good the old one was.
You get an unpleasant vowel movement.
A. Your mother ate us out of house and home.
A good friend will help you move house A really good friend will help you move a body!
Three. One to administer the anaesthetic one to extract the light bulb and one to offer the socket some vile pink mouthwash.
One to generate a "ChangeLightBulb" event to the socket.