As a male who was raised in the South myself, I have to say that I have never actually met a prototypical GRITS, which is to say that it is not an authentic concept in my experience. It is instead a stereotypical image of the prissy, wealthy, flighty Southern belle that is promulgated by marketers who want to make money from it. A GRITS is a character in a Walt Disney movie, and an insult to a real woman from the South.
Julia Sugarbaker, the female lead character on "Designing Women", was a G.R.I.T.S.
Dave: Knock Knock.
Clement: Who's there?
Dave: Europe.
Clement: Europe who?
Dave: That's not a very nice thing to call me.
Clement: L.S.V.T.I.W.M.N.T.W.I.H.O.H.M.N.V.E.T.D.T.S.C.F.T.N.K.T.T.A.T.T.R.O.T.H.T.B.D.M.D.T.A.C.T.T.M.A.O.G.H.H!
Short-hand for the word floccinaucinihilipilification, meaning the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).