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.
It's a definite experience for the couple and an opportunity to diversify their sex life and try something new. But I was more confused by the lack of people behind the showcase, no one is interested in this from them?