That's a good one! Although I suspect that we have to break it down into more finite divisions:

Goofy Stuff - App caused to work unexpectedly
Goofy S*** -- Windows caused to work unexpectedly
Bad Stuff --- App will break
Bad S*** ---- Windows will break

>What about another one: "BadStuff"? I use that term so much that some non-technical colleagues *must* think that it's an OOP term by now...
>
>As in... "if you spell the command wrong, the error handler kicks in. If you use the wrong command, BadStuff occurs."