A person who is popular but makes friends with people from all social groups. They aren't afraid to stick up for people, especially the underdog or those who are considered lame or uncool.
A stin is a person who enjoys becomingly beligerently drunk and getting into no less than three angry confrontations per night. A stin will tell you to "fuck yourslef" for something as simple as making eye contact with him.
1. Did you see that stin stick aguy in the face for not holding the dooropen for him?