What if your roommate brings home a large quantity of an illegal substance? She tells you that it is just one time to make a really good sale and get out of debt. She says she will keep it in her room and you will not even have to see it? He/she offers you some of the profits from the sale to keep quiet. What do you do? If you agree, are you in "possession" of the illegal substance? If so, what kind of possession?