this is not the first drink of the day, but the last drink of last night. Besides, the whole taboo about drinking during daytime is exaggerated; they do it in Europe. The trick is to use the uplift of the booze to counteract the downward tumble of the drugs; he is getting drunk to stay sober which when you think about it is actually pretty sensible. Encouraged by this logic, he pours another inch and a half of vodka, puts on the Reservoir Dogs soundtrack and swaggers to the shower.
