Two. One to put it in and one to complain that he never screws anything anymore.
Just 1...blondes will screw anything.
You don't need to, they glow in the dark.
No, no. Dad wouldn't allow that."
Rastafriedrice
Two. One to identify that the lightbulb has indeed burned out, and one to call the maintenence man to change the lightbulb.
None, that's what interns are for.
One
Two.
Don't reply with "No man has ever complained."
Isn't it cooked