When teenage boys were little, they were easier to figure out in many ways. They loved lining up cars in neat rows, wrestling and giggling with you (more! more!), and teasing sister (on repeat). You step into murkier waters once your little dude turns into a teenager. Then, what he likes is less clear — in part because teenagers don't share very much with grownups. So where does that leave you with a gift? Here's your get-unstuck guide to shopping for him.