Five surgeons from big cities are discussing who the best patients to
operate on are.

 The first surgeon, from New York says, I like to see accountants on my
 operating table, Because when you open then up, everything inside is
numbered.

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

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

 The fourth surgeon, from Los Angeles chimes in: You know I like
 construction workers, those guys always understand when you have a few
 parts left over.

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