hahah ...
this is a good explanation:
The Hipster Handbook
Some stereotypical accessories of the modern hipster include Vespa scooters, Buddy Holly-style glasses, beards, indie-rock band membership, Fixed gear Bicycles, Converse style shoes, Vice Magazine, and vintage clothing. Neighborhoods such as Uptown, Minneapolis; Wicker Park, Chicago; Allston, Massachusetts; Southside, Pittsburgh; Williamsburg, Brooklyn; South Philadelphia, Philadelphia; The Temescal, Oakland; The Mission District, San Francisco; Capitol Hill, Seattle; Clifton, Cincinnati; Hollywood, Los Angeles; the Hawthorne district in Portland; The Plateau, Montréal; Tribeca; Queen West and College St. in Toronto, Woodbridge & Corktown, Detroit; and other, smaller concentrations across the country have become popular living and recreational destinations for hipsters. Cheap, alcoholic beverages such as Pabst Blue Ribbon Beer are sometimes associated with hipster culture.