Keep you mouth shut.. I find it funny to see school yard tactics used in business, politics and even the news.
Remember the little word Karma... It does happen.. What goes around comes around.
I girl that insulted and swore at me years ago had it come back at her in her son last week. Her son was suspended from school for swearing, my wife asked the child where did you learn those words. Mummy he replied.
Keep it clean and nice and people will respect you later on..
Do you go to a job interview or meeting in a suit or nice clothes do the same with your mouth..
Also remember that everyday is another interview, every person you meet is another opportunity, just the door is not open yet.