Five surgeons were taking a coffee break.

The first surgeon said, "Accountants are the best to operate on because when you open them up, everything inside is numbered."
The second surgeon said, "Nah, librarians are the best. Everything inside them is in alphabetical order."

The third surgeon responded, "Try electricians, man! Everything inside them is color coded."
Then the fourth doctor interceded, "I prefer lawyers. They're heartless, spineless, gutless and their heads and their butts are interchangeable."

To which the fifth surgeon, who had been quietly listening to the conversation, replied, "I like engineers. They always understand when you have a few parts left over at the end."