Anyway, for now (but not for very long), I'll come up with a Word of the Day to help with my own, and hopefully other's, vocabularies.

I doubt I can teach Brad or Kilt anything though.
Ok, first one:
mordacious
\Mor*da"cious\, a. [L. mordax, -acis, fr. mordere, morsum, to bite. See Morsel.]
Biting; given to biting; hence, figuratively, sarcastic; severe; scathing.
-- Mor*da\"cious*ly, adv.