Trick question, anarchists can't change anything.
None. People who glow in the dark don't need lightbulbs.
One. We're efficient not funny!
Two, one to change the light-bulb, and one to observe how it symbolizes an incandescent beacon of subjectivity in a netherworld of cosmic nothingness. This is courtesy of Spencer Reid.(CM)
None... they just shoot the room for being black.
They refuse to have liters.
Because all proper tea is theft.