I made a coffee related mistake a few weeks ago on music night at my place. I usually make a pot of decaf, since it's a work night, and there's one guy that's not supposed to have caffeine anyway. But being in a hurry and somewhat distracted, I accidentally used the real stuff. No one else drank any that night, so over the course of the evening I finished off pretty much a whole little pot - four cups or so.
It wasn't until the next day that I realized my mistake...it explained why I kept waking up all night, though!
Oh, dear... that's a funny story, though.