When Harriet finally came down from her orgasm BD smiled at her and said, "The look on your face tells me that you really enjoyed that orgasm. Don't worry, before I am done raping your asshole, you will have several more. If you think your asshole squeezed my cock while you are having your orgasm, just wait; while I was raping your mouth, I did a quick experiment to see how long I could deprive you of air before you passed out. Believe it or not you lasted a minute and 45 seconds. The tubes in your nose that allows you to breathe is connected to a timer; once I activate the timer, every three minutes your air supply will be cut off for a minute and 45 seconds. The feeling of suffocation that you will feel will cause your asshole to clamp down extremely hard on my cock, what I am hoping for is that while you are being suffocated you will have an orgasm. Can you imagine how that is going to feel, cumming and suffocating at the same time? Well don't worry, well actually, do worry, it's not going to happen right now because I plan on got some serious ass pounding before I start suffocating you. Place both of your hands on my ass cheeks, that way you can help pull me into your asshole. Whenever you feel an orgasm approaching, squeeze my ass cheeks so that I can make sure my cock is buried all way inside of you. The orgasm that I had while I was raping your mouth took the edge off, so expect to spend at least 20 minutes with my cock in your ass, as you have already seen it can be quite enjoyable. Now, while I fuck your ass, I want you to squeeze your ass tightly around my cock whenever I withdraw it, and relax your ass when I push back in. This will make it more enjoyable for me and less uncomfortable for you."



BD started to withdraw his cock, Harriet tightly squeezed her asshole around it; even with Harriet's ass generously lubricated, it was difficult for BD to pull his cock out, it was almost as painful for Harriet as when he had forced his cock into her. Slowly BD pulled his cock out until just the head remained inside of her anal sphincter, he rotated his hips around several times; of course this moved his cock around inside of Harriet's ass forcing it to open up. Once his cock opened Harriet's ass up a little bit, he slowly started to pushed his cock into her an inch at a time. He would pause and rotate his cock around inside of her, opening her ass up. As much as he enjoyed the feeling of Harriet's tight ass wrapped around his cock, he wanted to open it up a little bit so he could start some serious ass pounding. He continued until all 14 inches of his cock were once again buried inside of Harriet.



The entire time Harriet had kept her hands on BD's ass cheeks helping to pull him into her, by the time BD was balls deep in Harriet's ass again, she was ready to have another orgasm, so she squeezed BD's ass cheeks. BD smiled in anticipation of Harriet's ass tightly milking his cock again; and sure enough, when she had her orgasm, her ass firmly squeezed the entire length of his cock.



Once Harriet was finished with her orgasm BD said, Now cunt, it's time to get some serious ass fucking going here." BD started to slowly saw his cock in and out of Harriet's asshole pulling back until just the head remained inside of her anal sphincter, then slamming the entire 14 inches of his cock up inside of her. He gradually increased his speed until he was fucking her ass as fast as he could, with Harriet pulling in on him, he managed to slide into her harder than he normally would, and by placing his hands on her stretched out thighs and using them for leverage, he added to his speed. He had to stop every couple of minutes with his cock buried deep inside of Harriet's ass and enjoyed the feelings of having his cock massaged by Harriet's asshole whatever she had an orgasm.



After fast and furiously raping Harriet's asshole for five minutes, BD hit the switch on the oxygen tank. He forced his cock deep into Harriet and waited. It took just over a minute for Harriet to start to feel like she was suffocating and to BD's pleasure, her asshole started to spasm around his cock as her oxygen supply was cut off. By the time the cycle was completed and Harriet was allowed to breathe again, her asshole was clamped down so tight around BD's cock that it almost hurt him. Once Harriet started to breathe again, her ass relaxed; BD started to pull his cock out so he could do some more serious ass fucking. Before he had a chance to, Harriet tightly squeezed his ass and started to cum. Again Harriet's ass tightly contracted around BD's cock, the spasms caused by Harriet's cumming massaged the entire length of his cock, caused BD to groan in pleasure. Just when he thought that Harriet was done and he was ready to start fucking her ass again, she squeezed his ass cheeks again. Much to both Harriet and BD's surprise, she was having a multiple orgasm, apparently her near suffocation actually added to her stimulation.



Once Harriet's extended orgasm stopped and her ass quit contracting around BD's cock, he started to rapidly pound her ass again. Harriet knew that she only had three minutes before she was suffocated again; she was quite confused as to why she was receiving so much pleasure from being ass raped and suffocated. As much as she hated to admit it, the feelings flowing through her were unlike any that she had ever felt before and reluctantly she admitted to herself up that she was enjoying it; the brutal raping of her ass, the electric shocks flowing through her nipples & clit, and the vibrations flowing through her womb, as well as the suction of her clit brought her to another orgasm in less than 2 1/2 minutes. She squeezed BD's ass cheeks and pulled him deep into her, this time Harriet had several short orgasms, she lost count at three, just after her third orgasm the control on the oxygen tank shut her air flow off. Harriet had a couple of more quick mild orgasms, suddenly she was having a hard time breathing and thought something was wrong until she realized that her air supply had been cut off. Up until now, the mild orgasms had been quick and fairly weak, this continued until she started to suffocate; incredibly, having her air supply cut off caused her orgasm's to increase in strength and length. After a minute of having her air supply cut off, she started one last long incredibly intense orgasm that lasted until the oxygen flow started again.



This is what BD was trying to obtain; between her orgasms and her suffocation, Harriet's ass milked the entire length of his cock. BD knew that he didn't have to fuck Harriet's ass anymore, and that when he was ready, he could just keep the entire length of his cock buried in her ass and let the spasms suck the cum from his balls; but right now he wanted to continue to pound the tight little hole, and make Harriet's suffering continue. For the next 10 minutes he continued to viciously rape Harriet's asshole, driving his cock as hard and as fast and out of her ass as he could, pausing only when the poor girl was being suffocated, or having an orgasm.



Finally BD decided it was time to fill Harriet's intestines with his semen, he twisted the knob on the remote-control increasing the intensity of the shocks flowing to Harriet's nipples, and clit also he increased the amount of suction on her clit, and he increased the speed of the balls inside of the suction cup.