I walked into it, as my wife was putting the girls down for the night. The first thing I heard was, No, dear. Ain't isn't a word. The wife then turns to me, and she says, Isn't that right?
Well, you know me. And I am not sure why this time, I unexpectedly answered, Well, Evyn . . . it really depends how and when you use it.
I guess it was the mood I was in - and after about 30 seconds of my wife's ranting - I was ready for the debate. She ends by saying, And You . . . You were an English major! Hrrrmmmph! -- (or some other equivalently weighted monosyllabic grunt). [ . . . ]