Possibly one of the greatest Wikipedia articles of all time:

“Gopnik is a sub-culture native to Russia and post-Soviet countries, characterized by squatting, aggressive behavior, a predilection to the Blat criminal subculture, and abuse of alcohol (specifically beer, vodka and “Jaguar” cocktail). Fashion preferences include Adidas tracksuits and dress shoes. In the winter, a leather jacket and flatcap hat (known as “Gondonka”) are added to a typical Gopnik’s attire. Gopniks have been compared to the Chavs, Spides and Neds of the United Kingdom.”

“The term “gopnik” was probably derived from slang term gop-stop, meaning street mugging. One of the distinctive characteristics of the gopniks is that they will often be seen squatting (sitting on haunches), a habit that originates from prison life.”

Source: http://en.wikipedia.org/wiki/Gopnik