An audible 'crack' could he heard as he went for it and her cry of "Aow!" became a moan of "ooo" as he pulled her back and impaled her on his cock, getting a good few inches of it inside her again for the second time in the day. She relaxed and her wetness of being submissive allowed him to then easily push the rest of his impressive 8" up her. The veins on his cock standing out at the pleasure of being back in her pussy. She thought he felt bigger this time than before, possibly the position, possibly due to the rope, possibly because she was so filled with submissive lust she was just letting herself enjoy the sensations.
Rob held his hands on Kelly's ass as he used them like a steering wheel to clamp her down on his cock and he began to ride her high to get her off quickly. He reached under her and frantically began to rub her clit so she would cum hard whilst he used his toned stomach to push the bottle in with each thrust of his cock. She was tied up, unable to stop this fucking from Rob's thick, hard cock, whilst the bottle penetrated her bum at the same time. She could feel on the deeper timed thrusts his cock and the bottle colliding inside her and this made her begin to cum. She shook and convulsed and almost wailed at the intensity of the double penetration and the orgasm washed over her.
She buried her head, biting the sheet as the waves continued. Rob held his cock deep in her and didn't allow the bottle to move either whilst she pulled on the rope trying to relax but couldn't. "Don't think I have finished fucking you!" He whispered in a deep authoritarian voice. "This fucking won't stop till I say it will stop. In a second I am going to remove the bottle and replace it with my cock. You can't stop me. It is my will and you will succumb and enjoy it! Are you ready? Say you are ready and willing to accept my cock up your beautiful ass hole. Ask me for it!" And he slapped her ass hard with both hands again.
"Ohhh I... I... Could I?... Oh yes just do it" She panted almost breathless. "Put your cock in my ass! I want it!" Kelly continued. "Oh I bet you do!" Rob smirked, laughing as he said it. He pulled the bottle out firmly and quickly, almost harshly. He kept two fingers in her hole after the bottle came out and was discarded, just to keep her open enough. He then pushed his head firmly against her hole; grunting. "Take it, take it all in!" He barked, himself getting worked up at the sight of his cock disappearing into her butt. He began to thrust. Each time more of his cock being swallowed up by her dark hole. She began to wail again as he began to grunt in an animalistic ritual of a man overpowering his woman's ass.
He sped up as she was still so tight he was enjoying it almost too much and he could see her straining against the rope was starting to burn her skin. He grabbed her knees lifting them off the bed and taking her weight rendering her almost completely unable to move as he began to pummel her hole. Faster and faster he fucked her, she held on for dear life as he spat on his cock keeping it lubed as she gripped it. He fucked her. Just a good hard fucking. Holding her and each thrust giving her what he wanted and what she wanted until he began to shoot his seed inside her butt hole. He dropped her knees and wrenched her ass cheeks apart leaning back, red faced and chested, releasing all he had been building up to. She let out a moan of pleasure as she also came again this time from the anal fucking, and the rigidity of the bondage and having succumbed to a man's submission that she had fantasised of fucking till just a few hours earlier. She slumped again as the orgasm wore off and the waves of pleasure began to subside. She let out one last gasp, a simultaneous gasp no less, with Rob's grunt as he pulled out of her ass, finally allowing it to suck in on itself and begin to return to normal size.
He thought about leaving her tied up but decided against it and pulled himself to his feet once more and unleashed the rope. She slumped on to the bed and he lay down next to her as they both regained their breath and composure. He admired her body once more as she admired his. "I think it's time to fill you with food rather than cum, you hungry?" asked Rob.