>>51551918"Hag" is a term of endearment in this context.
Hag model = full hips and breasts, a mature and developed woman.
Hag personality = Confident and secure, with an eye for what's important in life. Good marriage/mother material. Doesn't sperg out at shit that doesn't matter.
The opposite would be a womanchild, who still hasn't mentally grown at all since high school and still idolizes being a dumb teenager.