Both should be changed regularly, and both for the same reason.
None, because they can't climb the ladder.
None a burned out bulb can't catch a waiter's eye.
logic
What's Allepo "
Ask Hugh Hefner.
So he could save his stool.
Friend has an eyepatch on for some reason or another and I'm running out of decent jokes.
A: The same reason they sing Hymns instead of Hers!