A slang adverb, attributed to Russian 'mat', which in it's widespread meaning characterises particular situation to be very good, pleasant, or advantageous. Similar to English "fucking great!", or "totally awesome", but is more rude than the latter and is considered to be impolite, offensive and banned from official use.
-How is it going?
-Pizdato! (Fucking great!)
-How do you like my new car I've bought yesterday?
-Pizdato! (I think it is a very good car!)
-Zatseni kakuyu tachku ya vchera kupil!