For any language, it will be incomplete,if it doesn't have a " local lingo" . The working class plays a major role in promoting this dialect. North madras is the cradle of chennai lingo. stanley hoslital, mint street attracted people from orher states. Chennai lingo found a special place in kollywood films. Whether you like it or not everybody likes it slyly. A porter in chennai central railway station can speak almost, all official languages of india. In the 60's this state antagonised hindi imposition. Ironically, many hindi and urdu have found its place in chennai lingo . Before I sign off. Let me do it in chennai style. Ennamma appo varattumma!