Two. One to screw it in and one to complain that it's electrified.
Removed
Doesn't matter. They'll just nerf darkness next patch instead.
A light bulb weighs about 50g and a single ant can lift about.2g, so it takes somewhere around 250 ants working together.
Two. One to hold the bulb, and one to drink until the room starts spinning.
Can't complain...
You made the chain too long in the kitchen.