(This joke is from a professor who refered to lawyers as the second oldest profession:)
There once was a dog show to determine the world's smartest dog. Three dogs were in the finals. One dog belonged to a doctor. One dog belonged to an engineer. And, one dog belonged to a lawyer.
For the finals each dog was given a bag of bones to see what it could make.
The doctor said, "Stethascope, go!" The dog built a human skeleton.
The judges were ready to award the trophy right then. But, they decided to give the other dogs a try.
The engineer said, "Slide-rule, go!" (So, its an old joke.) The dog built a suspension bridge.
The judges were beside themselves. Which dog would they pick?
The lawyer said. "Loop-hole, go!" The dog ate the bones, got a percentage of all the tolls from the bridge and screwed the other two dogs.