Practical Office Joke My HR Director is one of the coolest guys I've ever met. He also happens to be a serious prankster. Today he got me pretty good, it was cold-blooded, but still good. About a week ago, my coworkers and I had a company outing. A few of us stayed out pretty late and we ended up back at my place. Of course I had to bring the Mary J out. What better time than with coworkers, right? Everyone partook and all was well. Over the following weekend, the HR Director found out about the…