Just two, but they'd have to be really small.
None he's still clinging to the old lightbulb.
None. Once the bulb goes out, they replace the house.
One. They stick the bulb in the socket and wait for the world to revolve around them!
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)
High queue-ality.
If they're black, they can't feed a family.