Unless you decide to live your entire life with your parents, there will come a time when you'll have to live with a complete stranger. Sometimes, it ends well and you become best friends. But if you are unlucky, a bad roommate enters your life and your peace of mind jumps right out of the window. And before you know it, your life becomes a living hell. If your roommate is showing these 11 signs, it's time you turn 180 degrees and run.