as everyone else is saying, there are a lot of possibilities. a couple: * some asshole patron at the bar could have slipped something in your drink. you can't just blame the bartender. besides, what would s/he have to gain, when s/he has to work all night and can't take advantage of you? * you can't even be positive you were drugged at all. i recently had a bad reaction with a prescription antihistamine that had me slurring my words and shuffling my feet, and left my eyes only half-open. i couldn't form any sentence that made sense, either, which really freaked out my best friend and roommate. if it had happened on a night when i had been out clubbing, i could have just as easily thought i had been drugged by someone else. at any rate, you should NEVER let your drink out of your sight. if you have to go to the bathroom, have a trusted friend guard it. and, to be careful, if you found that you have let your drink out of your sight, get a new one.