"Before class begins, Lethargic Larry/Laura walks by, and you notice a rather pungent, unusual smell. You realize that the smell comes from alcohol or marijuana. Laura/Larry meanders to a seat in the back and sits quietly, placing the correct book and notebook on the desk. He/she looks just as attentive as other students in the class, which is not saying too much. A couple of students who sit near Larry/Laura notice the smell, too, and start giggling. One whispers something to another student sitting away from Laura/Larry, who also lets out a snicker. It stops there, but these students keep glancing at Larry/Laura, who sits there not taking notes and not participating (which is not unusual for many students in the room)."