Light Bulb - SAS Programmers

Q: How many SAS programmers does it take to change a light bulb?
A: They can't change light bulbs... Without light, they can't read the manual, and without the manual, they can't figure out how to change the light bulb.

Buffalonians to Crew in Lightbulb

Q: How many Buffalonians does it take to screw a in a light bulb?
A: Two-one to get the new bulb out of the snowbank, and one to screw it in.

Senior Citizens to Screw in Lightbulb

Q: How many senior citizens does it take to screw in a light bulb? 
A: One, but she pays a telemarketer $2000 for the new bulb.