This sketch clearly shows that one needs special dictionary to decipher "гопник" lingo
The word "гопник" in contemporary Russian slang is similar to British "chav". These derogatory terms describe people with common behavioral patterns and similar appearance.
In this sketch they use mostly made up words, which sound too funny for the true "гопник".

NB: The word "гопник" is not related to Jewish surname "Gopnik", but some Russians can't help smiling when they hear it