Not only a mature man can get an erection from such a sight, but even an old man can get an erection from such a sight. He was very lucky that he caught the masturbating babysitter, because the girl is very appetizing and her pussy and ass just alluring with its narrow hole, into which I would also dive with pleasure.
That's a pretty expensive night's stay for the lady! I think it was a lot easier for her to get a hotel room than to get fucked by two big niggers. She's an extremist, though! I can only think of two possibilities. The first is that the lady is a nymphomaniac and she got to her favorite pastime under plausible pretexts. The second option is that the lady is hired and works for money. I can reasonably assume that if the lady does not fit into these categories, then she's unlikely to willingly set herself up with two black dicks.
How's it feel to jerk her off?