It something young white girls generally do - not old bags. Anyway, it’s a kind of croaking sound that supposedly makes one sound more important. It’s sort of a new version of the Valley Girl talk. It is produced by a tightening of the throat.
Thanks. I should have held off asking, as lots of others discussed the phenomenon downthread from your comment.
I recognize the sound, and it is painfully annoying to the ear of any normal speaking American.
Thanks again.