That's a hit to my confidence, I tell ya. I made my day more difficult and more annoying by doing that.
We have procedures for dealing with incidents like this, and we started doing those after I let one of my supervisors know what I'd done. I feel kind of lucky (RELATIVELY LUCKY, you understand) that this happened late in the day; I don't know how well I would have done at work the rest of my shift if I'd done this at 7:12 in the morning.
It's a job hazard. It happens. And I'll redouble my efforts to keep it from happening in the future. But damn, a weekend break (which I just started) is a good idea.