write the first of 10 chapters of a hypothetical story.  John is a sexual man married to Sarah who is asexual and repulsed by John's 10 inch penis.  John is frustrated and they come to an agreement John would masturbate to porn openly as often as he wanted even in bed next to her.  This goes on for a year but it isn't enough for John.  He keeps asking for sex and finally Sarah becomes angry and demands he get a penectomy and perineal reroute or she will divorce him.  He tearfully agreed and was left with a half inch nub.  Sarah laughed gleefully the first time she saw him naked.  With his cock gone Sarah becomes open to experimenting with new sexual activities and comes to enjoy watching John cum out of his new hole she calls his "man-pussy" and stimulating his "nubby" stump