OMG is just an abbreviation of the English phrase Oh My God! , which can be translated as "Bozhechki-hrenozhechki!". This foolish abbreviation is used, as a rule, to express strong emotions: surprise, indignation, fear and so on. Sometimes OMG is accompanied by another word of three letters: WTF , which stands for What The F ***? , that is, "What kind of Faka?"
OMG is in the list: Slang