A person who everyone wants to have sex with, and most likely will.
Mosienko can usually be summed up in one word: sex.
However, Mosienkos are also known for being sexilicious and in popular demand, this usually leads to wild, drunken licentious festivity and revelry. In other words: sex orgies.
Girl: "OMG, did you see that hot piece of ass?
Girl2: "Yeah, he's a total Mosienko, but I already tapped that. ;)"
Guy: "Holy FUCK, that WAS a great Mosienko."
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