Q: How many social workers does it take to change a lightbulb?
A: Four. One to change the bulb, one to counsel the old bulb because its been thrown away by an uncaring society, one to arrange the case conference and one to make sure they are all following the correct working practice.

Note: Sever of the jokes below relate to Ivy league schools. No offense was meant by them.

Q: How many mystery writers does it take to screw in a light bulb?
A: Two, one to screw it almost all the way in and the other to give it a surprising twist at the end.

Q: How many vegans does it take to change a lightbulb ?
A: Two. One to change it and one to get out a copy of The Ethical Consumer (or similar) and discover to his/her horror that the manufacturer (Thorn Lighting) is part of Thorn EMI who are involved in, errrr, I dunno, testing software on mainframes or making farms for 3rd world potaters or something.

Q: How many psychics does it take to change a lightbulb ?

Q: How many Duke students does it take to change a light bulb?

A: Three – one to change the bulb, and two to crack under the pressure.

Q: How many Republicans does it take to screw in a light bulb?
A: None, they only screw the poor.

Q: How many gardeners does it take to change a lightbulb?
A: Just one. The new light bulbs are just as easy to change as the older, heavier ones.

How many bureaucrats does it take to screw in a light bulb?

45. One to change the bulb, and 44 to do the paperwork.

Q: How many alt.fan.douglas-adams readers does it take to change a lightbulb ?
A: 42.

Q: How many young macrobiotics does it take to change a lightbulb ?
A: None. They all sit in a circle, watching the old macrobiotics, and think beautiful thoughts.