Yes, but things don't really go as planned.

Aaron gulped. He'd only just blown an inhumanly big load, and before that, one that was only marginally smaller, and now, he was supposed to do it all again? Could he even get hard so soon? His gargantuan balls ached only thinking about it, but he needn't have worried: the wanton moaning and lewd squelching from the direction of James' growing body already had an effect on his oversized rod. With every passing second, more and more blood pumped into his member, plumping it up, lengthening it.

But it still seemed to slow for Lily - with a groan of annoyance, she dropped to her knees in front of him and began slobbering over his length, hugging it against her body. The swelling body of her brother, or rather sister by now, with her swelling breasts, hips, ass and... everything... gave Aaron a very stimulating backdrop, and he felt his cock engorge much faster now. Soon, it was reasonably hard, Aaron's hips bucking at the thought of jamming it into the waiting, needy snatch between James' legs.

"Good, you're ready," Lily said impatiently, getting up and taking Aaron's member in both arms, dragging him over to where her sister was locked in another full-body spasm. Aaron could feel his balls swell with seed already at the sight of James' tits - they had begun to droop down the sides of the giantess' ribcage, showing no sign of stopping their growth. Even more blood rushed into Aaron's monstrous cock, making it twitch against Lily's body as he stumbled after her, his humongous nuts pushing his legs apart.

"Ahhaawww, yesss!" James exultant cry when Aaron's engorged glans kissed the redhead's equally swollen lips was enough to make him fully hard, and the giantess took advantage of that fact by lifting her body on all fours and ramming her hips forwards. Aaron's enormous rod was instantly engulfed in her sweltering, soaked walls, it's sheer size enough for him to be overwhelmed by the sensations, the **** of James' thrust on the other hand more than enough to throw him on his back, Lily jumping away just in time. James righted his body, pinning Aaron under her still growing body.

"Aaaowww fuck, it's huuuge!" James moaned on top of Aaron, her tits hanging down to the bottom of her rib cage. Her expanding ass already nearly reached Aaron's knees, covering all of his thighs and squashing his humonguous nuts against the floor, only its softness preventing the sensation from being uncomfortable. "Fuck me. Fuck me!"

Aaron couldn't even move most of is body with the enormous weight pinning him down, his cock massaged by James' twitching walls. Grabbing the giantess' soft thighs, he nevertheless tried bucking his hips upwards, but even without James on top of him, Aaron doubted he'd have been able to move the throbbing pillar of flesh jutting from his crotch. In fact, he was pretty sure that the surprisingly tight walls of James' snatch were the only thing keeping him upright.

"Can't move, little man?" James teased, the tremble in her voice and her heavy breathing betraying the giantess' arousal. "Then I'll--hnnnaah... do it myself. Don't blame me if something--mmmh, breaks..."

Aaron barely had time to look at the giant woman with worry before she started bouncing up and down on his cock. He could barely think. Every nerve in his rod felt on fire, drowning out almost everything else. Aaron thought he could hear Lily gasp somewhere to the side, but maybe it was him. The feminine juices coating his shaft liberally soaked his balls, his belly, his legs, pooling below him while loud slapping noises echoed through the room, accompanied by the lustful moans of the woman that had been James. At least her jiggly ass cushioned her wild bouncing enough for Aaron to remain relatively unscathed, although he was sure there would be at least some bruising when all was over.

"Nnfff, yes, yes, you're spreading me so wiiide," James whined, leaning forwards and planting her hands above Aaron's head, her heaving tits slapping together directly above him with her movements - and they were inching ever closer, their growth still continuing. Grabbing one of the heavy orbs with both hands, Aaron manoeuvred the stiff nipple capping it into his mouth and began sucking. The throbbing tip was enormous, bigger than a quarter and still swelling. The stimulation made James arch her back, smothering her partner with her breasts while she ground her crotch into Aaron's.

"Yeah, suck my titty, little man," she groaned, rotating her pelvis as she ground her nearly fist-sized clit into Aaron's belly. "It feels so good... sooo fullll..."

Barely able to breath under the mountains of titflesh, Aaron began feeling a bit lightheaded, the throbbing need in his cock contributing to it. It felt like it was melting, James' slippery walls clinging so tightly to it... and when James began rising up and down his length again, Aaron could feel the first globs of pre bubble up his lengthy urethra, spilling out into James' greedy cunt after what felt like minutes. As the sticky liquid hit her snatch, James moaned appreciatively, gyrating her hips to coax even more of it out of Aaron's churning balls. The swollen glands were more than happy to provide just that, plumping up and pushing Aaron's legs apart further and further.

Confusion blossomed in Aaron at this sensation - where his balls supposed to swell that much to prepare a load? It wasn't as if this whole situation wasn't insane, but... His train of thought was thoroughly derailed when James sat back up, pulling her beanbag-sized tits off of Aaron and began fucking herself on his rod in earnest. While being able to breathe again was a blessing, the intense pleasure from his monster cock blotted out everything else, making Aaron go crosseyed.

"Ah! Ahhnnn... Ah! Fuck, your cock is huge... look, it's making me bulge out!" James squealed, never faltering in her movements, the sound of her tits slapping against her body mixing with those of her ass slapping against Aaron's thighs and knees. And as he looked...

"Shit, something's wrong, she's still..." Lily had dashed over to where her sister was using Aaron like a sex toy. "James, you have to stop! You're still getting bigger!"

"Fuck you, Lily!" James moaned, bracing herself against the ceiling with both arms while she continued to slam herself down onto Aaron's cock, his bones creaking with every impact. "I'm so... fucking close... I can... feel it c-cumming--ah!"

Despite how much James had grown, her belly still bulged with her every move, the outline of Aaron's rod clearly visible as it churned up her insides, the head continuously hitting the entrance to her womb, smearing precum all over it. Aaron tried to crawl away, but he could barely move his upper body, his legs uselessly scrabbling against the floor where they were pinned down by James' truly gigantic ass and Aaron's own balls. He now realized that they hadn't been swelling in preparation for a load. They had been growing to keep up with the needs of the ever larger woman on top of him.

"Stop, James! You have to--" Lily pleaded, but James slammed her huge, but somehow dainty looking hand down before her sister, stopping her movements to lean down to her with a furious look on her face - but her twitching snatch massaging Aaron's fleshy pillar of a cock made clear that lust was still the prevalent emotion in the giantess' mind.

"Fuck off, I-- ahng! I only have to cum!" The giantess snarled, her body twitching from the still mounting arousal - and from the continuing growth. "Now get. Out!"

Lily barely managed to dodge the haphazard swing James threw at her and scrambled towards the door.

"I can't stay, she'll... I'll get help! Somehow!" She gasped before throwing open the door and running down the hallway. Aaron stared after her - he was now completely at the mercy of the titanic woman on top of him. Not that her cunt didn't feel amazing, but his ass and back...

"Now, where were we, little man?" Aaron turned his head back to face the lust-crazed expression on James' face. The giantess looked nothing like the man she had been before, instead reminding Aaron of his favorite film starlet, save for the red hair. His cock twitched at the thought, making James squeak in delight.

"Ooh, eager. I'll cum so hard on your dick," James moaned, gyrating her hips as her ass mashed into Aaron's gargantuan balls. "I'll... aannh, milk you dry..."

And with that, she began drawing herself up Aaron's length, arms again braced against the ceiling. Even squatting on Aaron's cock, she almost reached it with her head - and the distance was shrinking. Yet, her pussy felt as tight as ever, the giant piece of man meat stuffing it obviously keeping pace with her growth. Aaron felt like he ought to be worried about that fact, but it all ceased to matter when James slammed her ass down again, impaling herself on Aaron's length. All he felt was James' amazing pussy molding itself to the contours of his body... no, his cock... sliding up and down, up and down... Aaron was distantly aware of his quickened breathing, his writhing body under the ever-growing James, but all that was drowned out by the slickness wrapped tightly around his cock - which had to be twice as tall as he was by now. Aaron was quickly becoming a mere appendage to what had once been dangling between his legs.

"You're so hard... it's incredible--ah!" James squealed, her movements growing more erratic every time she slammed her ass down. It had grown big enough to almost cover all of Aaron's legs, but he wasn't worried. The torrent of seed being prepared in his straining balls was washing away all his cares. Aaron was so very close now, his cock twitching inside James as its head swelled.

"Oh god, what is--are you close? You're close, aren't you?!" James stared down at Aaron between her enormous, bouncing tits, arousal contorting it to a grimace of lust. "Do it! Pump me full of jizz! Give! Me! Your! CUM!"

With the last string of words, she drove her hips down on Aaron's inhumanly big cock, until, with the last thrust, it strained against James' inner walls, reaching the peak of its hardness. Aaron's balls squeezed together, forcing their thick contents outwards and upwards. If Aaron had thought that his last orgasm down in the living room had been intense and drawn-out, he was now learning better. Unable to form any thought, to even breathe, Aaron whole being focused on the sensation of sticky cum rising through his urethra that, however it had swollen up, still seemed too tight, too small for the heavy load forcing its way upwards where it would spill out and distend James' womb until it made his belly bulge obscenely.

"Oh fuck, it's coming, I feel it, so close, I'm so--fuck, almost... I'm--I'm..." James' incoherent babbling barely reached Aaron where he lay limply under the convulsing giantess. What did reach him was how her pussy clamped down on his cock when she finally came with a guttural cry, the vicelike grip slowing down the ascent of his cum. Aaron felt as if his dick was about to explode as his nuts pumped more and more cum into his shaft, the pressure from the backed up fluid distending his urethra. But in between the wild, uncontrollable twitches of James' cunt, little by litte, Aaron's cum made its way towards his swollen glans until finally, after an agonizing, blissful amount of time neither Aaron nor James would have been able to quantify, the sticky mess shot out of the heavily dilated slit with the **** of a firehose, the sound of it audible even over the lustful moans from James' throat.

"Mmnnaah, it's so muuuuch..." James groaned, rubbing her swelling belly while she lazily rode out her orgasm on top of Aaron, who could feel the sticky mess coat the giantess' inner walls and his cock generously, more and still more jizz bubbling up from his twitching and jerking balls. But James' womb wasn't swelling for very long. Suddenly, with a loud gurgling noise, her stomach began deflating under her hands, James body apparently rapidly absorbing the cum filling her.