Offices are a great place to work, right? They have unlimited access to coffee, airconditioning (or heating) and if you're lucky, super comfy seats to work from all day. The only bad thing, of course, is the fact that there are other people there, like, all the time.
And no matter how hard you try you're never going to be best friends with everyone. NEVER. Maybe they dislike you because you stole their coffee cup once when yours was dirty, or maybe they got your promotion, OR maybe there's just something about the face of sandy from accounting that makes you want to run your nails across a chalkboard.
Sometimes, no matter how hard you try you just can't get past some things that people do, so they need someone to politely tell them to cut it the hell out. What's left to do after that if they don't listen? Passive aggressive notes of course!