Certain nouns, such as "baby", "Mom" or "Dad", can be used without the article "The", and I think that by doing so you give a sense of intimacy and informality. Compare, for instance, these examples:
My mom said I should not eat that.
Mom said I should not eat that.
How's your baby doing?
How's baby doing?
I was wondering if I could do something similar with other nouns, particularly professions, such as nanny or nurse, to produce a humorous effect.
Let's imagine this scene. A man shoots a bullet in the head of a nanny—who drops dead on the floor—and says to his friend, 'Nanny fell asleep.'