Defenestration - the act of throwing something out a window.
I used to use it a lot back when I was in IT support when I was at someone's desk who was completely agitated because their computer wasn't working right. They'd be so upset could not give me any useful information about what the problem was - they'd just foam at the mouth incoherently. I'd tap a few keys on the PC, then put on my gravest face and say solemnly, "It looks like this computer needs a complete defenestration." I'd get a puzzled look, then I'd explain what the word meant. I'd always get at least a rueful chuckle out of them. That little bit of humor tended to calm them down a bit to the point where they could be at least somewhat coherent in explaining what problems they had so I could start troubleshooting.
Of course in most cases the errors tended to be either DEU errors (Dumb End User), or ID-10T errors (look at how it's written - ID10T).
