My dumpster diving into Dictionary.com turned up another gem:
crapulous - suffering the effects of gross intemperance, especially in drinking
I wouldn't call this one useless because even if your audience doesn't know what it means they'll be able to guess! They'll guess wrong, of course, but they'll still get the gist of what you're saying. Notice, too, that it's another one of those dictionary-in-hand ad hominem attack words I was talking about yesterday. Those guys really know how to tell each other off, don't they?