If you're going to wear headphones, make sure you're not rocking a cheap set of $3.49 Koss ear buds. Your co-workers will be able to pick up lyrics on "Suit and Tie" and will likely interrupt the bridge on "Thrift Shop" by stabbing you in the jugular with a ergonomic stapler. Don't be that guy bleeding from the neck because they wouldn't turn down the Rihanna. We're trying to save your life. Keep quiet and carry on.
6. Play Your Music Loud Enough For Everyone to Hear