My my. You think you know my drinking habits so well? [His smirk takes on a mysterious tone. Maybe he did enjoy the drink in some way, but he enjoys messing with his best friend just as much.]

I tend to be more accustomed to simple wines. [It's his own bluff; he's drinking plenty of other types of liquor, some of them hard, in his past.] Perhaps my look of satisfaction is a clever ruse, or a reaction to something entirely unrelated.