Five Surgeons are discussing the types of people they like 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 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." The fourth surgeon chimes in: "You know, I like construction workers...those guys always understand when you have a few parts left over." But the fifth 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. Plus, the head and the [rear end] are interchangeable."
