When I turned 21, I drove to Las Vegas to spend some cash (what little I had!!). After having Sunday brunch and before going to the Jai Alai matches at the old MGM, I sat down to play 21 at a table with some half-crazed and totally drunk southerner. This guy kept doubling-down on 12's -- and WINNING!! Every time that he'd do it, the dealer would call out "Doubling on 12" and before he'd deal the "double-down" card, the pit boss would come over and shake his head....but the guy won!! Seemed easy enough to me, so I tried it -- and lost....REPEATEDLY!!! Needless to say, it was a quick trip and a long ride home!! Steve B