Why are even jaded older teenagers anxiously awaiting the latest installment of Harry Potter? “It’s a delicious juxtaposition. They are reading about Harry, who is charged by the Ministry of Magic with underage sorcery, while they are careful not to be caught for underage drinking. Teens whose parents have found beer store receipts and seized their fake ID are asking mom for a ride to the bookstore Friday to be among the first with their own copy of Harry Potter and the Half-Blood Prince. They want to engage again in that other world that makes “walking to the cottage at night scarier.”