I do this a few times a year - torture myself by forgetting how much coffee makes me totally nuts. Case in point: Last night I hung out with some girlfriends. You know, the typical Friday night of hot tubbing and body painting and talking about anal sex. So when I had to wake up early this morning and walk to work for an upcoming client showdown, I felt like coffee would prepare me for the rainy Saturday in the office. I had a small cup about 2 months ago and felt okay, so I didn't think anything of it. But now, even hours after drinking a medium (or is that a grande) I'm all sorts of twitchy. My mind is on a racetrack that won't seem to stop. My hands are not in control. I want to do jumping jacks and write poetry at the same time.
I imagine this is what people on coke feel like, although snorting coffee beans might not be as much fun.