That's so recherche

As a I am a comp sci person, words that describe themselves make me giggle. Recherche's the latest. The self-reference is called recursion, and it's important. It comes in a few varieties, one of which is frustratingly simultaneously always correct but always useless: x = x. Can't argue with that. Also can't do much with it. The word examples tickle me because, for instance, recherche is recherche is non-trivially true – the word is indeed exotic and exquisite and sometimes even pretentious.