Mother and Son? Sure. Could be. The forceful energy of the boy tells us this is not the first time they have fucked, have let it rip. One notion of a way son and mom may copulate would have the son being overly cautious that he wasn't too much for her to handle, that he wouldn't hurt her "inside". Then that version of mom/son intercourse style is far from complete.
I like plumper women now, but this skinny woman does look like my Mom Beth did about 40 years ago and it is really good to see her fucked. Given the chance, I would still lick her good and fuck her skinny little body as hard as she could take, methodically penetrating her vagina that I remember so fondly. I would love to feel her come in my arms and then shoot my come into her vagina.
I'm sure my real little mother Beth would never let someone come on her face, and she probably wasn't much good at or interested in sucking a cock, but I AM sure she was good at wrapping her slim legs around a young man as he eagerly penetrated her and lay on top of her, pumping vigorously, and that she was really good at encouraging him, pulling his face down to hers to kiss him deeply and lovingly until all his cum spurted into her vagina.