Both should be changed regularly, and both for the same reason.
They don't change it. They just watch it burn out, then follow it around for another 15 years.
Trick question, anarchists can't change anything.
You hold the lightbulb and every politician screws you!
Ventriloquists have to be able to speak with their mouths closed. Politicians speak out of both sides of their mouths simultaneously.
Because you have to change them.
Pamperspired.
Just another reason to teach your cat to read.
So I punched her in the face. Now she has a reason.