Five surgeons are discussing who makes the best patients to operate on.

The first says, “I like accountants on my operating table. When you open them up, everything inside is numbered.”

The second replies, “Yeah, but you should try electricians. Everything inside them is colour-coded.”

The third says, “No, librarians are the best. Everything inside them is in alphabetical order.”

The fourth chimes in, “I like construction workers. Those guys always understand when you have a few parts left over at the end and when the job takes longer than you said it would.”

The fifth surgeon shuts them all up: “You’re all wrong. Politicians are the easiest to operate on. There’s no guts, no heart, no balls, no brains, and no spine. There are only two moving parts—the mouth and the asshole—and they’re interchangeable.”