My cock was rock hard and dripping on the floor as I looked up between my legs and watched her pelvis work back and forth into my backside. Slowly the pain began to subside and I was able to relax a little. When she felt like I had relaxed, she pulled out of my ass and ordered me onto my back on the small futon bed. She tied my hands over my head to the metal rail of the futon frame, using the middle section of the rope. This left her with 2 long ends that she attached to my ankles and yanked my feet backwards and upwards over my head. In this position , my asshole pointed straight up in the air.
She then moved in, setting her knees into position against my buttocks, leaned forward between my legs and after resting her hands on each of my shoulders, raised her pelvis up until the tip of her "cock" was poised against my asshole and then slowly let her weight settle on to me. This act forced her cock into my asshole with relentless pressure and she went directly to complete penetration. The rubber balls attached to the life-like dildo, were crammed right up against my ass and there was no way she could get further embedded in me. She slowly raised herself from between my legs, pulling out of me as she did. Then it was a smooth lowering of her weight into me again. This became her routine, and it became a relentless rhythmic fucking of my ass.
With each stroke my asshole muscles tried to cling harder to the invader. Each downward stroke forced the muscles to try to clench and protect that spot where I knew the end was going to batter. Soon the spot that kept getting slammed into became an all-consuming center of tightening muscles that doubled their efforts to wrestle her cock from her control. Just when I think I may have a chance to gain control of the motions, she speeds up her pace and begins to use her legs to raise her pelvis up then quickly drive back down into me. Faster and faster she begins to move. Her heavy breasts sway towards my face with each thrust, but always just out of reach of my mouth. My entire pelvic region is getting tighter and hotter. My face is flush and my whole body clenches and then she begins to slam into me in earnest. Clenching her butt cheeks tightly as she rams the cock into me. With each thrust, her pubic bone pounds into me and her breathing becomes sharper.
It is then that I realize that the pressure she is producing on her pubic bone is stimulating her clit and she is going to cum too. It then became really obvious how much power she has in her legs and butt. Tremendous thrusts slam into me, turning my insides into fire. The heat emanating from the core of my being slowly engulfs my entire body. I began to cum with out any stimulation's to my cock. It was as if each plunging stroke of her cock, created a matching expulsion of cum from the end of my own cock. From the pressure of her downward stroke, and her hard plump belly continually pounding on my balls, it was as if with every stroke, she was forcing the cum from them. Later, she would tell me that it had been like she was trying to capture and massage her clit with the outer lips of her pussy, and that at that moment, she was beginning to cum. Her whole body shook and the clenching and unclenching of her butt muscles culminated in a final all-clenching, all-penetrating plunge of her "cock" into my asshole. My insides were locked around the intruder and saliva-like strands of the self-made lubrication, hung from one of its' latex balls . She had driven into me so deeply that it was as if there was no penetration, just she and I part of one being, joined at the center of our groins. Her butt cheeks are rock hard and straining into me. With a tremendous groan, she went slack against me.
By now my legs have been pushed so far back towards my head that my asshole was pointing straight up. My cock is laying trapped between her belly and mine, in a pool of gooey cum. Even a slight movement between us caused my cock to slither back and forth between our bodies, further enhancing the feelings course through my genitals, and up through the rest of my body. Finally, with another groan, she pushes herself away and withdraws her "cock" from my clutching asshole. After she unties me, we shower together and dress and then she sets the appointment for our next therapy session.