Four - three to cut a hole in the roof and one to change the bulb.
A hundred but they'll all be competing to be the one to change the bulb and bring light to the world.
One, although it's probably screwed in too tight anyway.
Hella.
21, the first 20 will just repost an old one.
Eh, it's some number you've probably never heard of.
Because she wanted to be able to tell when it stopped raining.
In case he got a hole-in-one.
With a seesaw
Because they are well practiced in cutting.
It depends on how thinly you slice them.
Because there mom cleans it and there dad fixed the roof
Because he was dead.
Because his hose was in a different area code.