Forrester pours himself a drink. Forrester has another drink. A deliveryman brings Forrester all sorts of items, including bottles of booze. Forrester has a drink. In a later scene, he pours himself another drink.
People have champagne, wine and mixed drinks at a party.
Forrester has another drink, and on some such occasions is either asleep or passed out when Jamal leaves at night. Forrester has another drink, and then several more. Forrester pours himself a drink. Forrester initially appears to have a racist attitude toward Jamal, but we then learn that he was doing so just to see what kind of reaction he could get out of the teen. Crawford is an egotistical and self-centered professor who's more interested in listening to himself than his students.