The latest episode of “Taboo” aired last night on National Geographic Channel. It explored the issue of “Teen Sex.” One segment introduced viewers to the Kreung people of Cambodia, who build “love huts” for their teen-aged daughters to have pre-marital sex with as many teen-aged boys as they like. Another featured 15-year-old Australian tart Cassie Osborne and her teen-aged girlfriends, wearing barely-there dresses, practicing their sexual flirtation, looking forward to becoming some young bloke’s boy toy. And yet another took a look at Purity Balls here in the United States, in which teen-aged girls pledge to remain pure and abstain...