It's something that always made me scratch my head, but seems pretty common. When I was younger, mine did the same thing. "Mommy has to go to work now, Mommy comes home soon, Mommy this, Mommy that". They don't talk like that anymore, but I know people my age, give or take, whose parents still address themselves in third person. What about yours?
What are you reading this for? My post is up there! ^