Ruin a person’s day in a professional way.
There are just so many unruly people that you will encounter during the course of your day that you’re justified if you try to ruin theirs too from time to time. But if you have to do it, do it with class and professionalism. Pull out one of these Offensive Business Cards and give it to them, or leave it where they are likely to find it. Each card comes with a biting insult that is appropriate for specific situations.