The very nature of economics and the lively debates it generates has led to a number of jokes about the discipline itself as well as its practitioners. Here is my favorite:
An Engineer, a Mathematician and an Economist were marooned on a desert island. They had no food except for a can of beans. But they couldn't open it because they had no can opener.
"Give it to me!" said the Engineer. He pulled out a slide rule (for he was a very old Engineer), made reams and reams of calculations, and after several hours made the following pronouncement. "All we have to do is tap it lightly on this corner with a rock, for this is where the stress concentrations are highest. The lid should fly right off."
They tried it and, of course, it didn't work.
"Give it to me!" said the Mathematician. He made twice as many calculations and took three times as long before he exclaimed, "Eureka! All we have to do is wait. Eventually, by the laws of probability, the molecules will randomly arrange themselves is such a manner that the can will open all by itself!"
"And how long will this take?" said the Engineer.
The Mathematician did even more calculations which consumed yet another hour (everyone's stomach was really grumbling by this time) before he frowned and admitted that it would take on the order of 109 billion years.
The whole time the Economist just sat there shaking his head. "I don't see what the problem is." said the Economist. "Why don't we just assume we have a can opener?"
Here are some links to websites devoted to economists' jokes. I hope you will enjoy them!
http://netec.wustl.edu/JokEc.html
http://tanstaafl.gws.uky.edu/~wildasin/humor.html
http://www.stta-consulting.com/jokes/econ_jokes.htm
http://www.csuchico.edu/econ/old/links/econhumor.html
http://www.mygradnet.com/ProfessionalHumor/more_economists_jokes.htm