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.
Not a bad way to get my brother for sex. Brother and sister is my favorite subject, somehow the excitement comes quicker with thoughts like that. Well filmed, measured, no sudden rush. I like it when they give blowjobs slowly.