Hmm, I don't know. However, in my experience my XAH had quite a few "affectations" which he would use/bung on for no particular reason I could fathom.
For instance, he would do this "thing" when pronouncing some words which made him sound like a gangster or "rock star". He considered himself a musician who just hadn't been discovered, yet...it drove me CRAZY 'cause it was so FAKE!