At what point do you turn to petty revenge? Is it after someone's first offense of being annoying or entitled ? Or is it after you have already asked them once or twice to stop the offensive act? Or maybe it's after you already tried the proper paths of reporting them to higher ups and still nothing changes. Is that when you begin to devise your petty revenge plan? One health care employee and her colleagues had had enough one day. She reports on Reddit that over a decade ago she had a manager…