A Big Glass of Water
A man goes to the doctor and tells him that he hasn't been feeling well. The doctor examines him, leaves the room and comes back with three different bottles of pills. The doctor says:

"Take the green pill with a big glass of water when you get up. Take the blue pill with a big glass of water after lunch. Then just before going to bed, take the red pill with another big glass of water."

Startled to be put on so much medicine the man stammers:

"Jeez doc, exactly what's my problem?"

Doctor says,

"You're not drinking enough water."

A rabbi, a priest, and a lawyer were all...
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 didnt eat me?" And the shark replies, "Professional Courtesy!"