The Notion of Slang in Linguistics. Slang is a world of mask and mirror. Irving Lewis Allen Slang is language which takes off its coat, spits on its hands, and goes to work. Carl Sandburg. 1.1. Controversial Points of Slang Definition and Different Approaches Toward It. Much has been said and written about slang . This is probably due to the uncertainty of the concept itself. No one has yet given a more or less satisfactory definition of the term. Nor has it been specified by... read more