Jaw breaker

Wanting to test out your new-found powers in the most merciless way possible, you grab your cum-soaked sister-in-law by the back of her heaving, whimpering head and **** your cock back into her mouth. She moans with delight initially, as though your cock was a direct shot of opiates into her system. Quickly, though, the whorish moans were dampened by muffled cries and gags as you use her mouth with less respect than you would a blow-up doll's. Despite the obvious discomfort in her reddened, strained face, her hands stay on the ground between her knees, never daring to stop or even slow you down.

"You can't get enough of my cock, huh Jennifer? Let's see if that's true..."

Having **** your cock into her mouth to the point where it has almost completely disappeared into her, you think to yourself "I wish my cock was twice as big." The moment your thought completes you feel your member growing, as though in the first stages of a balloon artist's inflation. The expansion causes your cock to travel quickly down past the tight grip of her throat as it lengthens. You can literally feel it pass the entire throat and **** itself through the sphincter at the top of her esophagus. And you weren't just longer. Your cock grew drastically in girth. Her mouth before was open slightly uncomfortably, but now her jaw was about to snap, open so wide it was as though she was a snake overestimating the prey she could swallow. Even in her throat it was noticable, feeling your shaft pressuring against the bones of her windpipe. You could see the shape of your own cock pass its way through her neck.

Her reaction was... severe. As your monstrous member filled her insides, her face took on a dark purple hue, her eyes seeming about to bulge out of their sockets, with many deep ridges forming on her forehead. Tears, sweat, and drool flowed freely from every orifice on her face, her nose geysering what appeared to be all of the above and perhaps some stomach contents as well. All this transpired as she violently slapped and pushed at your thighs to escape your throat-crushing cock which, unfortunately for her, was stuck as firmly as a door jam in her, the tip hovering somewhere just above her stomach. Any sounds, screaming, gagging, shrieking, were all deadened, the sounds denied by blockade of your massive intrusion.

Feeling as though she could take no more, she desperately attempted to rise to her feet to escape. The sight was wonderful, her stood up, feet together, knees slightly bent, bent over at the waist sticking out that still throbbing ass, pushing on your hips, with what looked like a flag pole in her throat. Her feeble struggle made you so hard that you couldn't help but rock your hips back and forth, attempting to fuck her stomach at this point. The fit was so tight, though, that instead of fucking to the center of her anatomy, her whole body moved as you thrust back and forth, even while you held the back of her head. Her throat was so firmly packed that putting her entire body in motion was less friction than trying to move your cock within her an inch.

Terror enveloped her. Drool and bile flowed as much as your titanic dick would allow. She was broken and quivering on your cock, like a chicken on a spit.