The law is the law, and in New York the law says an adult business isn't allowed to operate in most neighborhoods throughout the city. But that unpopular adult zoning law doesn't apply if the business just happens to be open to people of all ages and, therefore, isn't "adult." \n Therefore, Ten's World Class Cabaret, a topless club in Manhattan, has put out the welcome mat for kids. And a state supreme court judge says it is OK. \n Said Mark J. Alonso, lawyer for the club: "There's nude Shakespeare. There's movies with nudity. Why pick on Ten's? You could take your 15-year-old son to see the movie 'Striptease.' Why can't you take him to see a striptease?" \n Said Mayor Rudolph Giuliani: "This is, like, nuts. These are sick, perverted places. What do you want kids in there for?" \n Said Justice Stephen Crane of the New York State Supreme Court: "Ten's cannot be defined as an adult eating and drinking establishment if it does not exclude minors." \n Case closed? Of course not. Mayor Giuliani said Crane's decision was "one of the jerkiest rulings I've see." He said the judge had completely overlooked the intent of the law, which was to prohibit sex-oriented businesses from operating within 500 feet of homes, day care centers, houses of worship, schools or one another. \n The mayor promised the city will appeal. In addition, he said any parent that would bring a child into a place like that should have his custody questioned. \n Actually, not many parents have brought junior into Ten's. According to Alonso, only one minor, a 14-year-old boy visiting with his parents, all tourists from South America, has stepped inside. \n The loophole won't be closed that easily. The law specified "adults only" businesses because it was not supposed to interfere with legitimate theater or films that have nudity or sexual themes. Expanding the law to close the loophole could also affect those businesses and raise new questions about constitutionality. \n Left unchecked, though, the loophole could become a giant portal through which other clubs and adult businesses are allowed to remain in operation.