This paper is a depiction of a new research topic the scholar takes the book of Dr Rauf parekh or Urdu slang, who is renowned Urdu scholar and editor of Urdu dictionary and his debate with another respected linguist.Dr parekh does not agree to accept the slang as informal language and excluded abusive language from his dictionary .Dr AttashDurrani opinion that Urdu there's no slang in its vast language areas .Often the words like slang are depicted as public, local Jargon, specific Bazar abusive, laborers language. Dr Parikh published his book as first urdu slang dictionary. Dr attash to reflected that he gave up a joint venture of editing Urdu slang with Dr sabirkaluravi both stated that there are no slang words spoken in Urdu rather one .they say that when slang is used in literature and thus entered in dictionaries ,is no means remains slang rather referred. The scholars shows the research to get more confident and specific strong results, after a deep analysis of the words entries labelled as slang .Both the linguists did not use term  slanguage.' so it is necessary to did out the actuals.