Growth Spurt-Spurt-Spurt
“It’s not too… big, is it?”
Sally stared at her boyfriend’s cock as she straddled his legs. Gently, she reached out one of her small hands and wrapped around his shaft. She could barely even touch her fingertips. Almost dripping with arousal, she contemplated the physics of fitting that massive sausage into her tiny body and grinned.
“I don’t know, but I’m excited to try!” Joe’s six-foot-six, musclebound body shifted as he chuckled at her eagerness. Sally had known that their size discrepancy was going to make this complicated – she was tiny, only 4′11″, and weighed 90 pounds dripping wet – but jesus his cock was big, even when compared to his body.
“Just be careful– ah, uhhh…” He moaned in pleasure as she lifted herself up and ran the tip over her slit, feeling it’s Coke can-like width tease her apart.
“Here goes nothing,” she thought to herself as she lowered herself down, impaling herself on his massive rigidity. “Oh fuck!”
She could feel every inch of him as she slid further and further down the shaft, the length disappearing into her like a magic trick. She honestly wasn’t sure where her body was putting it all, except that it felt like her entire body was being filled up by his enormous cock. Her skin tingled, her muscles ached, her vision blurred.
Joe was making quiet, incoherent noises beneath her, her gentle giant of a boyfriend entirely overwhelmed by the pleasure of their first time together. Groaning herself, she bottomed out, her hips resting against his as they both panted in the suddenly-saunalike room.
“I’m going to try moving,” she whispered, looking down past her flat chest to the bulge in her abdomen where her boyfriend’s cock was visibly tenting her torso.
She started standing back up again, drawing herself back up off of him. She’d make it maybe halfway back up his cock when her boyfriend’s hips buckled and he thrust upward involuntarily, re-burying himself in her all the way. She yelped in pleasure, and as they descended back to the mattress she could feel his cock begin to spasm in orgasm. Thick ropes of cum sloshed into her well-stuffed body as Joe came, both of them groaning and moaning in unison.
Finally, she slid forward, pulling herself messily off his cock and resting against his body. His cock slapped against her ass, still half-erect even after his eruption.
“Not too big,” she murmured to him. “Juuuuust right.”
After that, the two mismatched lovers had no limits. Joe would come home from his workouts at the gym horny, and Sally would come over and eagerly help him burn off his erection. While it had never been hard for her to take his full length, she found that it got easier and easier as time went on for her to take his entire foot-long shaft all the way inside, which in turn seemed to make that whole-body tingly orgasm she’d never felt any other way seem stronger and stronger. And the first time she managed to get her lips all the way around his massive head, she felt like her entire body was on fire! It was like something in him unlocked incredible pleasure in her.
It was perhaps six weeks later that Sally first started noticing her clothes didn’t fit so good anymore. It was subtle at first – a too-tight waistline here, a suddenly-risque hemline to a skirt there. She thought at first she was retaining water, but a visit to a bra-fitting shop told her that she needed a properly-fitting bra for her cute little B-cup breasts for the first time. “Since when have I had boobs?” she asked herself, cupping them in her hands.
She drew a finger further down, tracing the barest outline of her abdominals. “Since when do I have abs?”
She showed off her new lingerie to Joe that night. “And I can’t help but wonder if that big cock of yours finally knocked loose some hormones or something I was supposed to get years ago,” she quipped between licks of his pole. “I mean, it’s not like I can wrap these around your dick or anything,” she said, hefting one boob in her hand, “but it’s a nice upgrade all the same.”
Afterward, Joe looked contemplative. “Do you have a tape measure?” He got her to stand against the wall, and make a mark, then they measured it. “Five-foot-two?” she read out, puzzled. “I’ve grown three inches?”
“I thought you seemed taller,” Joe said, patting her on the head.
“Holy shit!” They were both still naked, and Sally grinned at Joe. “You know what this makes me wanna do?”
“What?” Joe said, his dick already starting to firm up again.
“Oh, I think you’ve got the right idea…”
With that, they were off to the races. Sally’s growth spurt seemed to crank her horniness into overdrive – she practically begged Joe to fuck her twice a day to help keep her satisfied. Joe, for his part, got used to dating his sudden nymphomaniac, and took plenty of pleasure in helping her explore her rapidly-changing body.
“I look… normal.” Sally said one day, examining herself in the mirror. She’d just crested 5′8″, on the high-end of average height for a woman, and a major jump from just three months prior.
“Normal? Sweetie, you’re beautiful.” Joe stepped up behind her and rested his chin on the top of her head.
“Oh, you flatterer. I was talking just about my height, not these,” she said, cupping her DD bust, “or this,” she said, slapping her firm, fit ass, “or even these guns,” she boasted, flexing her arms and pushing up a small but well-defined bicep.
“Whoa there, when did this become a gun show?” Joe smiled and flexed his own massive arm, the bicep far out-sizing Sally’s.
“Ooh, love it,” she said. “But that reminds me. I want you to take me with you to the gym.”
“Why?”
“Well, I feel like I’m starting to get a little ripped from all this, ah, exercise we’re doing, and I want to build on it properly, you know, actually do some lifting.” She mimed a bicep curl.
“Sure, I’ll get you a guest pass.”
Sally took to weightlifting like a seal to water. After a week, she was matching Joe’s standard routine, and a week later, she was out-lifting him on the squat rack, her compact body hiding within it extreme reserves of strength. He watched in awe as she did seemingly endless reps of bicep curls with 50-pound dumbbells, her muscles flexing and tensing on command.
“This is fun, but you know what a good workout does to me…” she said, racking up her weights and turning to Joe. He could see her nipples pushing hard against her sports bra, its spandex straining to keep her F-cup tits from jiggling out of control as she pounded out reps.
Their lovemaking was getting more and more adventurous, mostly as Sally’s instigation. Her growth had made it possible for her to finally give that boobjob she’d been teasing him with back when she’d first bought herself a “grown-up” bra, and she was able to slurp down seemingly endless inches of his cock down her throat, her gag reflex all but non-existent at this point. They’d even tried anal, and found that her ass was every bit as deep and accommodating as the rest of her, her entire body dancing with pleasure as she bottomed out.
And still she grew. “Do you think I should see a doctor?” She asked one evening, as they lay in the afterglow. She’d just passed six feet tall, and had celebrated by trying to squeeze herself into one of her blouses from before she’d met Joe. Unsurprisingly, it was laughably small on her, only able to be buttoned up around her still-skinny waist. Her breasts, now pushing their way out of G-cups, were far too large to be contained, and her arms were sticking six inches out past the cuffs.
“Do you think you should see a doctor?”
“I don’t know. I feel fine – great, actually! – but this is so fast…” she shifted on top of him, the position feeling very different than it had just a few months previously. He really felt her weight, now, her height and her muscles and just how much more of her there was.
“…but I do like it.” She ground her hips against him, aroused at the mere idea of how big she was getting.
“Weren’t you just talking about going to the doctor’s?” he asked, his cock stiffening again despite his tiredness.
“Mmm, that can happen later,” she said, “right now Big Sally wants her lover’s cock again.” She wrapped her tits around him and started driving him back to a full erection. He swore every time she did this more and more of his cock vanished into her cleavage. Soon, he was sure, she’d been able to completely cover it between those boulders of hers.
“C’mon, I’m tired,” he groaned. He’s already come three times that day, and was sore to boot. But she didn’t let up, and his cock continued to stiffen.
“Once more, for your girlfriend?” She pouted and wrapped her lips around his head, sucking and slurping. “Your big, sexy, horny girlfriend?”
“Oh, fine.” Joe rolled over, reached out, grabbed her around the waist, and lifted her onto his legs.
…at least, that’s what he tried to do. But as he went to lift her, he found she was a lot heavier than he expected, and he just sort of ended up dragging her along the sheets a little. She giggled.
“Ooh, am I too big for you to carry anymore?” Pulling herself free of his grip, she threw her leg over him and straddled his torso herself, his cock slapping against her back. “Just sit back and let me do all the work, you big, strong man.”
He groaned with pleasure as she slipped his cock back inside herself for the fourth time that day, and soon enough came again, sending that same glorious tingle throughout his girlfriend’s growing body.
She did, eventually go to the doctor, who, after a series of scans and tests, proclaimed her to be the very picture of health, and could barely believe she’d grown a foot and a half in six months.
“Six foot five, three-hundred pounds, and fit as a fiddle!” she said to Joe when she got back to the apartment. “Told you there was nothing to worry about!”
Joe was lying in bed, and watched amusedly as Sally started stripping down as soon as the front door was closed. Having her growth quantified so precisely had gotten her motor going like nothing else.
“Dr. Fisher could barely stay professional around me. When I pulled off my top so she could check my boobs for cancer, I swear she was going to cream herself just looking at ‘em.” Joe could see how that might happen – her massive L-cup tits were works of art, firm teardrops that seemed to defy gravity. Her thick, muscular frame surely helped with that, although she was far stronger than she appeared, able to lift Joe with just one arm.
She slid into bed next to him and kissed him gently. “Did you miss me?” She asked, stroking his arm.
“I could ask you the same thing,” he said, his fingers snaking down to explore her vagina. She was sopping wet, as he had expected.
“Just can’t get enough,” she said, and with a single push rolled him onto his back, then climbed on top. Even now, with their sizes basically equal, this was her favorite position, since the change in perspective helped remind her just how much she’d changed since they met. His throbbing cock quickly found its way into her, and they began pistoning away.
She groaned and moaned, still the louder of the two of them. It felt great, but a normal sort of great, she realized. The weird tingling was gone, and all she felt was the more normal sort of pleasure she’d always loved with him. Curious, she guided his hands up to her breasts, to let him play with her nipples, but no change – while that felt good, it wasn’t the same.
“That’s weird,” she thought. “What’s changed? It’s still Joe, I’m still me, I’m just bigger, as big as him, as big as I–”
“Coming!” he groaned, faster than usual. She felt him spasm and thrust one last time deep into her, his cum rocketing out. “A big as I wanted to be!” she thought as her own orgasm shot through her. That was it, she was as big as she had wanted, his equal.
As they came down together, and she slid back onto his chest, her huge tits pancaking between them, she smiled. “Well, a little more than equal in a couple of ways.”
“What was that?” he groaned out. “Sorry I came so fast, don’t know what it is today but you’re just extra sexy for some reason.”
“Mmm. Thank you,” she said, kissing him again.
“Love you too, babe.”