"I would rather give birth to a baby elephant than raise a teenager again. It would be less painful," says Renee Cassis Hoering of New York City. "I cannot believe that my darling, sweet little girl has turned into a 16-year-old stranger who just wants money from me all the time." After seeing his son through the teen years, Bob Mittelsdorf is in favor of the Mark Twain approach to child-rearing: "When a child turns 12, he should be kept in a barrel and fed through the bung hole, until he reaches 16…at which time you plug the bung hole."...