Hella.
A: Six. One to screw in the lightbulb and five to fend off all those Californians trying to share the experience.
One, but it will take 13 attempts.
One. He stands in place while the whole world revolves around him.
Tires need changing too you know!
Californians don't screw in lightbulbs, they screw in hot tubs. (I remember this from the 1970s when I was in middle school. It's one of my first dirty jokes)
Hella