I have been known to assume different speaking voices from time to time. Sometimes, for weeks on end, I will use a voice over and over again to the point of driving my friends and loved ones insane.
Lately, my favorite is a very exasperated uptown lady-with-a-capital-L voice. The voice is currently nameless...but it sounds like a Bitsy or a Muffy or a Blaine or a Pinky or a Honey with a very complicated hypenated last name...and a Park Avenue address...and a personal staff of twenty.
Just imagine Peggy Guggenheim with a ramped up drinking/prescription drug problem, and there you go.