I WAS HANGING around this week at my son's elementary school, chatting with a group of parents as we waited to take our second- and third-graders on a field trip. Suddenly, one mom raced toward me and, nearly breathless, said, "You have to tell me about Glove Affair." "What's Glove Affair?" another mom asked. "It's a condom party for teenagers," the first mom replied before I could say a word. Suddenly all eyes were on me, eager for an explanation of how I could possibly allow my 13-year-old daughter, Emma, to attend such an event. The truth is, when Emma...