I hear these terms infrequently, but they always make me think when I do hear them:

Old man: This is your father. Does this work from a female perspective? Could a woman's old man refer to her father and her husband? I guess depending on your situation, it could be both with the same man. :D

Old lady: This is your wife. Why isn't this your mother?

There's no reason for this post other than to point out the weirdness of the terms.