Adults are basically just children who've grown fat, watched their dreams die, and learned to shrink from confrontation. So it follows that the modern workplace is just as petty and territorial as your typical elementary school playground, except there's a lot less spitting and hair-pulling, and a lot more bitchy note-writing. The most successful workplace notes strive to entertain just as much as they impolitely advise and chastise, and the notes collected here are some of the best of the medium.