My technique for playing drunk is usually to double or triple park my drinks; something like a pint of lager, a Long Island ice tea and a large bourbon is good but one scotch, one bourbon and one beer is better.
Then, after sampling an adequate amount of these beverages the idea is to generally have a good time and fool around whilst winning people's chips.
Eventually this will start to get under some player's skins which will in turn affect their play (often because they want to bust you) and you can gleefully trap them and tipsy-ily bid them 'gg'.
The next stage for me comes after a few more rounds of triple-parked drinks, which is about the time I start to listen directly to the drinks themselves, the kindly whispers echoing out from their little glass houses...
This is usually when things start to get blurry and presumably the little drinkies don't wish me well because I wake up without any memories or any tournament trophies or cash winnings.
My theory is that perhaps the drinks roofie themselves in order to steal my recollections and winnings.
They seem so trustworthy at the time...