For me it's officially Four Loko. I had it for the 2nd time on Saturday's camping party. Even on a full stomach (after having dinner), taking my time, going on a slower pace than last time and also drinking water, it still got me. The first time the effect was fast but this time I got hammered after an hour or so, all of the sudden. Others had to help me get out of the pool because they were concern I would fall asleep there. I went to my tent and fell asleep. The party wasn't over yet and my friends were trying to wake me up but I was dead alseep; knocked out. I'm done with Four Loko. Not even rum, 2 tequila shots nor the other cocktail drinks (at least I was able to stay all night awaken with those drinks) did what Four Loko did.
What about you? What's an alcoholic beverage you don't want to try ever again?