Luxury Goods
One day, the economics teacher talked about luxury goods, and to make it easier to understand, he said: "Students, do you know what a luxury good is? Suppose you are shopping with your girlfriend, and she stares at something for more than 30 seconds. If you pay for it, then that item is a luxury good." The students all smiled knowingly. But it’s not over yet, "Continuing to shop, if your girlfriend stares at something for more than 30 seconds again, then, students, your girlfriend is the luxury good!"
