Let's see, when I was 14 I started listening to grunge (and not just Nirvana, I'm talking about U-Men, Malfunkshun, Filter along with others here), wear flannel shirts and just avoiding every trend of the 2000's. I didn't like punk, metal or any other kind of rock post 1994, I loathed (well, I still loathe) merengue, salsa, vallenato and the emerging reggeaton genre. I started reading more adult oriented books, and stuff from other countries other than mine, began writing stuff on my notebooks, grabbed a guitar and played grunge all day every day. So basically I was completly different than every person who attended my high school, and just about every person in my circle of friends. Of course everybody just sorts of finds his self later on, and the same friend who thought The Matrix Reloaded was a master piece now indulges himself in Alejandro Jodorowski's films.
So my teen years were the most hipsters years of my life, I still have some hipster moments from time to time, like playing retro games (Or games that I couldn't play because my pc couldn't handle them and I just forgot about them, but now I remember them and I can play then with no problems at all) or listening to other kinds of music, like Mike Oldfield as of late.