Assuming you have one, of course. I think it is the most or second-most consumed drug in the Western world (honestly not sure how it stacks against alcohol), so I'm guessing most of you do.
Mine's definitely tea. I like a nice smooth unsweetened iced tea, usually black or a black-green blend. Gold Peak makes a good one, and the Safeway store brand is also not bad. Earl Gray, hot, with either a splash of skim milk or way too much sugar is also good. I prefer Wissotsky for that. And soy chai lattes, hot in the winter, frozen in the summer. I usually get Starbucks because it's readily available, but Caribou Coffee is actually a lot better.
How about you?