You know that guy at work, or that girl at school? You know the one I am talking about. 
The one that no one really likes, maybe because they are weird or have something wrong with them. The one that people talk bad about behind their backs. Maybe you participate in this or are just a silent observer knowing that it isn’t right. But if you were to do something about it, maybe say something, you may quickly find yourself on the outside with them.
