I think if it really bothers you, you should respectfully let him know. My Daddy Dom calls me his little girl or his baby girl which I love. He also used to call me "little baby". For some reason that hits my buttons and feels like something a bully on a play ground would say. I explained that to him and told him the terms I do like. He has stopped using it. We are just on line, so the way it is said and the intonation are entirely in my head. If it were real life where I had other visual or verbal clues I might react differently.