No introductory paragraph, here, because that is too mainstream.
1. You find yourself saying things like “I saw that on Tumblr six months ago" or “I knew about that band before they were big" on a frequent basis.
2. You own ripped jeans, some sort of oversized hat, thick rimmed glasses, flannels, old sweaters from thrift stores, or at least some Doc Martens. But if someone else is wearing stuff like that, you think "Wow, you're trying a little too hard."
3. Showering is an optional thing for you. Sometimes you don't shower just to prove how chill you are.
4. You consider yourself an existentialist. Also, you hate capitalism and wish you could just travel the world and “chill forever, bro," although you probably low-key aspire to a high paying job.
5. You are into poetry, or at least pretend you are. That also goes for old school philosophers, Kendrick Lamar, Portlandia, and Wes Anderson movies.
6. You find yourself spending more time trying to look disheveled than put together.
7. You have tattoos, or at least say “Yeah, I'm definitely getting a tattoo soon."
8. You are a total snob when it comes to coffee or tea, as in you have to have a certain brand or you will have a hissy fit.
9. You plan to move to Portland or Brooklyn when you graduate even if you have never visited, or know nothing about those places.
10. If you are a guy, you are trying to pull off the long hair/bun/beard look. If you are a girl, you are trying to date a guy with the long hair/bun/beard look.
11. You think dogs are lame. You are definitely a cat person. Even if you are highly allergic.
12. You think love is a lie and that no one will ever understand you. You then tweet depressing lyrics about it, if you even have a Twitter.
13. You outwardly get offended when people call you a hipster, but inside you're like “Yeah, man. I am a hipster."