Not long ago, your older brother Nick turned eighteen, and your eldest brother, David, came to visit; being the youngest and the only girl, you often spent a lot of time on your own. That day, Nick went to a bar with friends; David decided to go too, but your mom made him take you along. You put on your favorite jacket and got into the car. When you and David arrived at the bar and sat down, David ordered non-alcoholic drinks for both of you; the first thing you saw was Nick—already wasted and still drinking. You exchanged a look with David, but for the moment, you didn't intervene.