Q: How many Sun readers does it take to screw in a light bulb?
A: 10. One to hold the bulb and nine to rotate the ladder.

Q: How many members of the P.L.O. does it take to change a light bulb?
A: 45 – One to drive the car, four to shoot the president of Sylvanias bodyguards, three to kidnap the president of Sylvania, five to think up the ransom demands, ten to paste up the ransom note, eight to cut little eye-holes in the cloth sacks, one to drive a truck with 2000 kilos of dynamite into the American embassy, one to claim responsibility for the bombing, and twelve to commandeer a building with working lights.

Q: How many professors does it take to change a light bulb?
A: Just one, but once we get tenure, we dont change anymore.

Q: How many Americans does it take to change a lightbulb ?
A: Two. One to replace it and one to tell him it was burned out (in states that still have car-inspection laws.)

Q: How many CND supporters does it take to change a light bulb?
A: None. They wont, because:

Q: How many Belmont Abbey students does it take to change a lightbulb?

A: Three – one to hold the candle, one to light the flint, and the other to pray that it works.

He goes online and asks if he should fix his lightbulb and waits in the dark for the results to come.

Q: How many Real Women does it take to change a light bulb?
A: None: A Real Woman would have plenty of real men around to do it, and one of them can change the bulb while hes at it.

Q: How many Conservative economists does it take to change a lightbulb?
A: None. The invisible hand does it.

Q: How many mathematicians does it take to screw in a lightbulb?
A: None. Its left to the reader as an exercise.