Non-definitely

Two of my favorite people in the world—they, strangers to each other—share a common formulation: they refer to their moms in the third person as "Mom" instead of "my mom." For example:

Her entire adult life up till then, Mom was an engineer; then she opened a restaurant at the age of fifty-five.

I really like this manner of expression. It's a very warm and familiar way to frame it, and it demonstrates how close these two people are to their respective mothers (which, by the by, they are).

It's one of those things, like a southern accent, that I know I couldn't pull off—it would just sound forced from me. But, man, do I appreciate it when I hear it.