Three Surgeons and the best Patient

Three Surgeons and the best Patient

Three surgeons are discussing who makes the best patients to operate on.
The first surgeon said,
"Electricians are the best, everything inside is color coded."
The second surgeon said,
"No, I think librarians are, everything inside them is in alphabetical order."
The third surgeon shut them up when he said,
"You're all wrong. Politicians are the easiest to operate on. There's no guts, no heart, no brains, and  no spine. Plus, the head and the butt are interchangeable..."