She knows he has quite an interest in the contents of her chamberpot. Why not lure him into putting his dick in the castration machine with an offer for her to fill that shitpot afterwards. The deal is that if he is a good boy, and puts his penis in the hole, he can enjoy a little scatology later in the evening. Meanwhile, her rear view looks very interesting. If you guys have still got your cocks you may find the view stimulating.
Question: Which hole would you put your dick into?