Q: Did you hear about the constipated mathematician? A: He worked it out with a pencil. This one always gets someone to cringe. I love it. Alternately: Q: H

Q: Did you hear about the constipated mathematician? A: He worked it out with a pencil. This one always gets someone to cringe. I love it. Alternately: Q: How many mathematicians does it take to change a lightbulb? A: One. The mathematician hands the lightbulb to two blondes, thereby reducing the problem to a previously-told joke.