A friend yesterday sent me a link to a Russian version of lolcats. Rolcats is, shall we say, not all warm and cuddly. My Russian isn't good enough, or even at all, to say whether or not the English translations are accurate. But no matter, because whether Yuri and Dimitri are real matters less than the cruel amusement offered therein. Although, given the way that English is used (We sleep with vigor...) I'd have to wager a guess that whoever is writing these captions has a knowledge of the Russian language, poetry and literature, and possibly the translation of same.
Just my guess.