A rabbi, a priest, and a lawyer were all caught in a shipwreck.
Naturally, there are a lot of sharks circling around. All of a
sudden, one shark darts in and grabs the priest for lunch. No
more priest.
The rabbi starts praying frantically, but to no avail, as a shark
comes in and eats him, too.
Now the lawyer is really worried, as a shark is coming for him.
But, miracle of miracles, the shark puts him on its back, carries
him to shore, and lets him off.
The lawyer, curious, waits till the shark is far enough away not
to eat him, and asks, "How come you didn't eat me?" And the
shark replies, "Professional Courtesy!"