Five surgeons were discussing who makes the best patients to operate on. The first, from Manchester, said : 'I like to see accountants on my operating table, because when you open them up, everything inside is numbered' The second, from Birmingham, responded : 'Yeah, but you should try electricians - everything is colour coded.' The third surgeon, from Edinburgh said : 'No, I really think librarians are the best - everything inside them is in alphabetical order.' The fourth surgeon, from Belfast , chimed in : 'You know, I like construction workers... those guys always understand when you have a few parts leftover.' But the fifth surgeon, from London , shut them all up when he observed : 'You're all wrong. Politicians are the easiest to operate on. There's no guts, no heart, no balls, no brains and no spine, and the mouth and the arsehole are interchangeable.'