Swearing at work has generally been seen as a no-go area. But are there exceptions? John Legere, the CEO of T-Mobile used some pretty colorful language to fire up customers of competitor Verizon. But are a few F-bombs aimed at the competition a good rabble rousing tactic or an alienating faux pas. Legere made a brief apology on twitter for publicly slamming his competitors but trying that in your next business meeting may well get you fired. So is there an appropriate scenario to curse at work? Sometimes the milder expletives can be an attention grabbing way to make a point. Legere says he curses to appeal to his workers and customers, perhaps a swearing CEO comes across as more down to earth and relatable. It can also be an effective tactic when you're trying to emphasize a point that everyone needs to take seriously. Researchers from Northern Illinois University found that a light curse word at the beginning and the end of a speech led to more positive attitudes about the topic. Listeners also had increased perceptions of speaker intensity. You may want to hold off on the Legere style F-bombs for now but some well placed expletives are definitely attention grabbers.