Teetotaler. Not very uncommon here(India) for my generation. It is a not a cultural thing and drinkers usually tried to hide the habit from their family (Though it is changing fast. It is considered cool now and movies and TV serials have at least one scene in a bar). Initially I didn't do it because it is generally considered as a bad habit and none of my close friends or relatives drank. Later I decided not to do that because I didn't want to lose my senses. I still remember a company outing where a colleague got naked in front of everybody after drinking. I don't to end up like that :-)