text:  Maybe they're just all of a sudden way less appropriately dressed, overly sexualized. They're tired in class, withdrawn, depressed, distracted. They're bragging about making lots of money all of a sudden. They might have two cell phones, one that's for family, one that every time it rings, they have to answer it. They might have new tattoos. They might be talking to their friends about going out on dates with older men. You start...