A term to describe a person who is ignorantly oblivious to how trashy they are (see ratchet). However, this person is slightly more classy than ratchet, hence the French pronunciation, rah-shay.
"Oh man look at that classy girl in the Prada dress holding her shoes stumbling on her walk of shame. That's so Ratchét."
by Pricklypears August 24, 2013