I pretty much go either of two ways when I'm drinking... which, admittedly, is rarely and never to the point of dead-drunkenness. I had that worked out on me when I was fourteen and saw one drunken classmate lie in his own vomit and the ball-crushing, determined female classmate turn into a weeping, vomiting little girl who let a random guy feel up her ass. No, that random guy wasn't me. But I digress...
In company where I don't really know that many people or am there just because we happen to be in the same organization/job/etc. ... a lonely, melancholy drunk who just wants the night to be over.
In company where I know the people I'm with and who I count as friends... a jovial, even somewhat randy drunk.