Jeff had moved in with his sister, Anna. It was about 1 month ago that the chronivac incident happened, and Jeff was enjoying how much use he got. His sister frequently brought home her friends, and they all used him thinking nothing of it. His sister used him the most, however, and this was the case when she came home from work. Anna walked in to see Jeff, already erect and waiting for her load. Anna, with no hesitation stripped naked, completely exposed. Jeff knew what was coming, so he got on his back, right there on the floor. She sat down on his face, and let out a short piss in Jeff’s mouth. He swallowed it greedily. She shifted forward, aligning her sweet asshole with Jeff’s mouth. Her asshole began pulsing, and she let out an incredibly soft shit in his mouth. This shit was malleable, and moulded itself to every surface in Jeff’s mouth. Her shit was filling his mouth with no breaks; from the back of his throat, to on and underneath his tongue, to in and surrounding his teeth. When she was done, the shit protruded a few inches from his wide open mouth. Jeff’s cock was fully erect. Anna, very recently, began to indulge in her fetish beyond using Jeff. She wanted to taste it as well, so she got on top of him, lowered her face to Jeff’s, and began French kissing him, pulling and sucking her own shit from Jeff’s mouth. Her pussy was soaking from this, and she began to ride Jeff’s cock, both of them in ecstasy from the taste. This has become their lives. Anna would come home after work to Jeff, use him as a toilet, and then use him for sex, and neither wanted anything more.