5. People with an aversion to green vomit. Happy St. Patrick's Day! What's that you say? You thought St. Patrick's Day was Friday, when the first slicks of artificially green puke showed up on your sidewalk? Nope, this whole weekend was just a preview to the actual holiday, which takes place today, March 17. Since the holiday is on a Monday this year, we've all gotten to experience the booze-fueled distillation of an entire culture down to four or five offensive stereotypes for multiple days in a row. It's just like the movie St. Patrick's Day, starring Bill McMurray as a leprechaun weatherman.