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Or from the meaning of nirvana - that is "state of no emotion and desires", "nothing-state".

торчишь ("you're sticking up")
http://lingvopro.abbyyonline.com/ru/Translate/en-ru/%D1%82%D0%BE%D1%80%D1%87%D0%B0%D1%82%D1%8C

ништяк is from narco vocabulary, means "high" after taking drugs, may be used figuratively.

пиздец - obscene, literally, vagina-like
пипец - less obscene, but literally, penis.
охуеть - obscene,...