At least two, but they have to be pretty small to fit.
1001 1 to offer up the bulb and 1000 to scream 'Get in the hole'
One, but there are FOUR LIGHTS!
2 but how they got in the light bulb I will never know
One....Two...One, Two...
So he can fit on a spaceship.
It wouldn't fit on their shirt.
One to screw in the lightbulb, stock four carts of supplies, and handle seventeen simultaneous customers at any one time for five consecutive hours.
Well, turns out one is not enough, but if you pair it, two can.
Because Americans use imperial unit system.
At a Mars bar!
