Simply put, a dirtster is a hipster who's just dirty. Hipsters are carefully put together as to look like they just woke up and suddenly looked this cool. Dirtsters are subtly different. They did just wake up and, unlike the hipster, just put on their only pair of pants.
They are known for drinking cheap beer, smoking cigarettes that have already been half smoked,
dumpster diving, asking "are you
going to eat that?", and smelling just a bit funky. In a dimly lit, well ventilated environment, the hipster and the dirtster are almost impossible to
differentiate. Careful attention to behavior, however, will revile their true identity.
If you are a bartender:
The Hipster orders a local micro-brew. A dirtster orders
Lionshead, PBR or whatever is the cheapest beer.
If you are dating one:
Hipster has an iPhone, a small garden
in the back of their studio, listens to NPR and buys you vinyl and vintage clothing.
Dirtster has an old iPod they 'found', lives with at least 5 other people, and buys you items from
salvation army stores.