From the Hipster Handbook -- by Robert Lanham
1. You graduated from a liberal arts school whose football team hasn't won a game since the Reagan administration.

2. You frequently use the term "postmodern" (or its commonly used variation "PoMo" as an adjective, noun, or verb.

3. You carry a shoulder-strap messenger bag and have at one time or another worn a pair of horn-rimmed Elvis Costello-style glasses.

4. You have refined taste and consider yourself exceptionally cultured, but have one pop vice (
ElimiDATE, Quiet Riot, and Entertainment Weekly are popular ones) that helps to define you as well-rounded.

5. You have kissed someone of the same gender and often bring this up in casual conversation.

6. You spend much of your leisure time in bars and restaurants with monosyllabic names like Plant, Bound, or Shine.

7. You bought your dishes and a checkered tablecloth at a thrift shop to be kitschy, and often throw vegetarian dinner parties.

8. You have one Republican friend whom you always describe as being your "one Republican friend."

9. You enjoy complaining about gentrification even though you are responsible for it yourself.

10. Your hair looks best unwashed and you position your head on your pillow at night in a way that will really maximize your cowlicks.
Top Ten Signs you are a Hipster:
hip ster - \hip-stur(s)\ n. One who possesses tastes, social attitudes, and opinions deemed cool by the cool. (Note: it is no longer recommended that one use the term "cool"; a Hipster would instead say "deck".) The Hipster walks among the masses in daily life but is not a part of them and shuns or reduces to kitsch anything held dear by the mainstream. A Hipster ideally possesses no more than 2% body fat.
www.thehipsterhandbook.com
The Hipster Glossary
(Excerpts)

bennie--hat. "Have you seen Micah's new bennie? She looks def as ef."

bleeker--tourist. "Every time I'm in the city, some bleeker asks me for directions."

bust a moby--to dance. "Let's go to the Tunnel and bust a moby."

Clubber--younger Hipsters from the Gen-Y set who love to dance, listen to electronica music, and promote parties.

cronkite--boy. "Have you seen Anne's new cronkite? She met him at the cafe and he is such a frado."

deck--a key word for most Hipsters, similar in meaning to the antiquated "fresh". To be deck is to be up on the latest trends, cutting edge, and/or hip.

fin--the opposite of "deck", similar to out-dated terms like "whack" and "lame". Something that is fin is bad or undesirable. "How can you like that Vin Diesel movie? Every film he's ever starred in has been fin."

get puffy--to bust a cap. Actually, this phrase is never used. Hipsters are art-school kids.

hypo--a cokehead. "His Steven Seagal ponytail makes him look like a hypo, and I think I saw him wiping his nose."

kale--money. "Yo, Kim, can you slide me some kale? I'm still waiting for my mom to send rent."

Loner--introverted Hipsters who have little time for social engagements due to a borderline obsessive relationship with their hobbies and/or work.

midtown--uncultured or unhip. "He's never heard of Spike Jonze. He's so midtown."

Neo-Crunch--post-Garcia hippies promoting idealism for a new century.

Polit--extremely literary Hipsters who have philosophical approaches to politics and existence, but are romantic in matters of love. The term "Polit" (pah-lit) is an amalgamation of the words "political" and "literary".

Schmooze--a networking Hipster obsessed with his/her career.

tassel--girl. "Jim is definitely a frado, but somehow he gets a new tassel every night."

UTF (Unemployed Trust-Funder)--Hipsters who have the benefit of a wealthy family and are thus unencumbered by the distraction of a "straight" job.
The Rockabilly--this style is fin.
Buffalo '66, the greatest hipster movie of all time.
Ryan Adams' music is for hipsters everywhere.
Note that he is sporting the "Tossed Caesar" hairstyle. This is so deck.
Hipsters have crushes on people like this:
Note the Electro-Mullet hairdo on Franka.