Just to clear up what a hipster really is, and yes you may laugh. Some of these descriptions are kind of mean.
Btw I chose to ignore answer nr. 1 from Urban Dictionary, but you can read it here.
Someone who listens to bands you've never heard of, wears ironic tee-shirts, and believes they are better than you.
"Julian is such a hipster!"
Hipsters are too cool for Urban Dictionary. You probably don't know what they use because it's underground.
The hipster's skinny jeans tore at the crotch, and it turned out he wasn't a man after all.
(hip-stur) n. A 20 something white, upper-middle class suburban transplant to any gentrifying neighborhood in any major city, but Brooklyn, NY in particular. Disheveled, hand-me-down appearance to present the image that they are not a slave to trends or fashions(ha!) They typically wear thick, Andy Warhol-like glasses (whether they need them or not), unshaven, unkept shaggy hair and retro Converse sneakers sometimes with no laces. The term is often used as a pejorative considering a "hipster" detests being called a "hipster."
Williamsburg, Brooklyn is now a hipster neighborhood.
Huge believer in evolution, whose enemy is those "unenlightened" conformists who follow their evolutionary desires in choosing sexual partners.
Though early women evolved to prefer muscular, athletic, confident, secure men, hipsters are convinced that men who try to achieve these characteristics and their female admirers are doing so because they lack the intellectual capacity to realize that pale, sickly men with a smug attitude make the best partners.
Hipster: Look at all those conformists who waste their time working and exercising, when they could be buying trendy clothes.
A fancy way to say "I'm a douchebag"
Jon: I'm a hipster
Eric: So, what, you're a douchebag?
Jon: Yes sir.