Five surgeons are discussing who are the best type of surgical
 patients.
 
 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 at the end, and when the job takes longer than you said
 it would."
 
 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, and no spine, and the head and butt are
 interchangeable."