With one platinum hairdo and three platinum albums behind her, not to mention a Broadway stage role, a new album and a possible tour, Madonna has also had more than her share of hard knocks — as recent tabloid revelations confirm. This was a night out with Sean Penn in only slightly less troubled times. ‘Do something, Lou,’ Madonna Louise Ciooone said, leaning forward on the seat. Lou, a beefy-shouldered, balding bodyguard with a tendency to sweat, turned from where he sat in the front seat beside the driver and regarded her pleasantly. Stretch limousines were out by the hundreds — drunken dream fish, silver and schooling there in the late afternoon light in front of Trump Plaza Hotel and Casino in Atlantic City, where Iron Mike Tyson and Michael Spinks were about to go against each other in the convention centre for the pleasure of Madonna and Sean Penn and me and 20.000 other souls, plus untold millions around the world via satellite. ‘Goddamit, do something,’ Madonna said agai