One but the bulb will have to spend four hours in the waiting room.
A hundred but they'll all be competing to be the one to change the bulb and bring light to the world.
Seven - one to actually change the bulb and six to complain that they liked the old one better.
Just Juan.
FORE!
No IT guys change light bulbs, they just keep flicking the switch on and off again until something happens.
In the summer there is a tax deductible convention in Hawaii dealing exactly with this issue.
Staying up all night wondering if there really is a dog.
Because they often spend years at C EDIT: made it more punny
Ask about his routine.
Lock them both in the trunk of the car for an hour, then open it up and see which one of them is happier to see you.
You're just gonna have to be a little patient.