Four surgeons are discussing who makes the best kind of
patient to operate on. The first surgeon says, "I like to
see accountants on my operating table because when you
open them up, everything inside is numbered."

The second surgeon responds, "Yeah, but you should try
electricians! Everything inside them is color coded."

The third surgeon says, "No, I really think librarians are
the best; everything inside them is in alphabetical order."

But the fourth surgeon shut them all up when he observed:
"You're all wrong. Politicians are the easiest to operate on.
There are no guts, no heart, no balls, no brains and no spine,
and the head and the ass are interchangeable."