I learned a new word today! Okay, so maybe that's not a big deal, but this one is strange and amusing enough that I want to share.
chichi SHEE-shee, adjective: Affectedly trendy.
From the French word that literally means "curl of false hair"; used figuratively in the phrases faire des chichis, "to have affected manners, to make a fuss"; and gens à chichis, "affected, snobbish people." Sometimes spelled "chi-chi."
Now I just need some occasion to use it.