The word is universally used in Russia and it's context is understood from a young age.Trying to define the word and it's usages and applications is almost impossible - I like this definition I found on the web:"The Russian word blyat is one of the universe's greatest mysterious, including: What happened to the unknown wonders of the worlds? What is the true nature of god? It has no real meaning & is just a catch-all expression for anything & everything"