The SUV drove away and June turned onto the sub division’s ring road.
“Hey, happy birthday, my little man!” June smiled from the wheel and lovingly.
“Yeah, it has been!” Ty grinned.
“You got rid of the old cunt, got a really nice new toy to play with, and you got to get your dick wet.”
“Mmmhmmm.” Ty blushed. “So... like... you’re completely cool with this new existence, aren’t you? Like, is there any step mom left?”
“Step mom?” June raised her eyebrow in confusion. “What do you mean, ‘step mom,’ baby?”
“Y-You used to be my step mom.” Ty gulped, whispering.
“Oh, fuck that.” The busty brunette laughed, eyes on the road as they passed nearly identical houses on the street. “No, baby, I’m your kinky toy now. We’re like, partners in crime or some shit, right?”
Ty blushed deep red and grinned. “Really?”
“Yeah!” June tousled her hair and grinned. “We’re like, made for each other.”
“Hey... what kind of guys do you like?”
June stopped at the intersection out of suburbia and bit her lip as she watched traffic whizz by. “Told you I liked to feel small.” She blushed. “I’m 6’3”, so there aren’t many guys who can measure up to me, you know? So I always looked for big tall men. Like taller than me.”
“What... what if I... grew big for you?”
June glanced over with realization and gasped. “Can you? Shit, you can, can’t you?”
“Yeah... I wanna feel change too.” Ty gulped. “So why not age and grow big and tall for you?”
The light turned and Ty saw his pet squeeze her legs together in sexual arousal as she hit the gas.
“I’d like that a lot. Maybe you could develop that cute little cock into something worthy of the God you are, you know?”
They turned onto the main drag and headed toward the big city mall.
Ty closed his eyes and concentrated. He let out a moan of pleasure as warm sensations began to wash over him.
June gasped next to him. “Oh, you’re doing it now?” She nearly swerved into the other lane and got an angry honk. “That’s so fucking hot!”
Slowly. Gently. He wanted to savour the feeling of growing and developing. He clenched the seat below him and moaned out loud. He felt his body starting to press. Energy building up inside him. His dick went hard and tented in his shorts.
“Fuck, baby!” June gasped and reached over, grabbing Ty’s stiff cock and jerking it in her hand from the driver’s seat. “That’s it! Doesn’t changing up feel good?”
“Feels... feels fucking amazing, now!”
They kept driving. June bobbing her right hand on Ty’s cock and steering with the left. She could feel it. She could feel it! He was growing! His little four incher was soon up to a solid five, and when she looked over his body was developing to its correct size for 15. He was firmer, more developed, a lot taller.
“Nnngh!” Ty slapped her hand urgently. “S-Stop, I don’t wanna jizz on my clothes!”
“We’ll get you new clothes.” June gasped, pulling off into the giant mega mall’s parking lot and positioning them strategically in the poorly lit back wall. She pumped her hand furiously. Bigger... bigger... she urged.
“Ah! AH! AHHH!” Ty cried out, cumming from his very first handy and aided by the sensations of growth. Hot jizz seeped through his shorts and soaked his groin.
“Mmmm, yeah!” June kept pumping him for the last squirt and turned off the SUV. “Keep that dick and that body growing for me, baby!”
Ty’s voice was deeper. He was passing into sweet 16 and looking much more manly. His cock was still hard, protruding from his shorts, and June gaped at the big firm bulge pulling up the legs.
“Take those off,” June urged. “I wanna see.”
Ty complied, peeling off his damp shorts and staring in wonder at his stronger legs, his kiwi sized balls, and his now six inch and increasingly plump cock.
“The shirt, too. It’s gonna be too small in a bit anyway.”
Ty gasped, taking the shirt off and blushing as June grabbed it and wiped the fresh cum off his dick and new pubes. She tossed it away.
“I want to watch you grow into my big man.” She blushed.
“What about-”
“Shut up, baby! Just grow!”
Ty gulped as June stared in wonder. He passed into 17, grunting as his muscle definition began to build just like he wanted. They watched him inflate and strain, his abs deepening, his pecs firming out, biceps, arms, and legs swelling with muscle. Meanwhile, his dick began to go through a growth spurt. It had been slowly pumping up before. Now it stretched and thickened at a startling rate.
June whimpered and reached over again, pumping her closed fist down on a seven inch cock that was quickly filling up to eight. June watched her fingers slowly begin to push out as it thickened. She jerked him excitedly.
“Yes!” She gasped. “Bigger! Bigger!”
Ty groaned and bucked in the seat a little. He was 5’10” now and sprouted manly fuzz and stubble. He was fucking built and hung and getting bigger still, though slim and boyish.
His dick began to throb tightly in June’s hand and her eyes went wide. “You’re gonna blow again, aren’t you?”
“Hnnngh!” Ty replied, hot pleasure washing over him as his new cum cannon erupted with a violent burst, splattering Jizz over his chest as he grew into an 18 year old. He began to bulk up again, his voice was getting deeper. He had passed into six feet tall. He rocked his ass in the seat and almost kicked the floor with his big manly feet, grunting, eyes clenched, as two more jets of cum spilt out of his nine inch cock. He had developed a patchy beard and a mustache, trembling as muscle hardened and his manhood swelled in June’s slick eager hand. She used his own cum as sticky lube to keep tugging him, bouncing her hand over his big proud cock, watching it still growing to such a length and thickness that she began to worry she might not be able to take it.
Which was perfect. Ty reached over with a big sweaty hand and grabbed her right tit, squeezing it through her shirt. June squeezed her legs together and moaned, a wet patch growing between her legs.
“HNNNGH!” Ty hit his final spurt and surged up to 22. 23. June’s hand was now holding a massive ten inch long cock. It was so thick she was actually having problems holding her fingers closed. So long she slid up and down with great exaggerated sensual movements. His head touched the top of the van’s ceiling. That would put him well over six foot and closer to seven.
June stared in shock and delight and admired every fuzzy swell of his chest, his hard pecs, his huge manly arms and thick powerful hands. His abs were swollen and tight. He looked like a massive football player, or a construction worker, or just a huge hunk of godlike meat.
And his face! Holy shit! Ty had remained cute and boyish, but his face had become chizelled and angular, with a sharp sexy chin and warm blue eyes.
“Back seat.” June demanded.
“What?” Ty rubbed the back of his head and let the dizziness fade.
“Back fucking seat, you fucking hunk!” She gasped, grabbing his left arm and pulling him back as she hopped across the console. “I’m gonna fuck you!”
Ty extricated himself from the now sticky and wet seat and sheepishly navigated his huge and havy new form over the center console and plopped down into the warm leather seat in the back.
June pulled her shirt over head head and revealed her massive tits. Ty stared in awe at her puffy huge nipples and a wicked idea hit him.
June gasped and stiffened as a huge electric zap flew up her spine and concentrated in her chest. She looked down at her already big tits and whimpered as they began to puff up. At first it looked like they were swollen, but in fact they were slowly throbbing, swelling, growing bigger by a teensy amount, and staying that big.
“Oh my God!” June blushed deep red. “Yes, yes! I get to grow too!”
She swung around and frantically ripped off the jeans and straddled Ty’s huge thighs. They kissed. Slowly. Sensually. Until June moaned, her much bigger E cups squishing against the bottom of Ty’s pecs. She grabbed the back of his neck and frantically sucked his tongue. The monster under her ass slapped against the crack and throbbed. Gasping for breath, she looked into Ty’s eyes and winced, jaw falling, eyes wide, as she lifted under her ass, positioned her sopping pussy, and put his huge mushroom in, sliding down slowly to get used to the size and girth.
She let out a terrific cry and began to weep. “You’re huge!” She whispered, in a mix of pleasure and pain, and began to slide up and down eagerly, filled to bursting by his ten inch monster. All the while, her breasts slowly swelled, gaining roundness and pertness and shape and size, filling out her already expansive bust to two perfect round 50 E’s.
Ty in his adult form was nothing like his boy self. He was all man. Panting and sweating, he fucked back gently, humping into June and she slid up and down. The shock of him taking her in return forced her to grab his neck and hang on. She gritted her teeth. He felt her grow warm and begin sweating down her supple body.
“Gonna... gonna...”
Ty slapped his dick up as much as he could and only got eight inches in. June grabbed her mouth frantically, let out a muffled scream, and shook violently with climax. Ty wasn’t far behind, giving a few more desperate thrusts and prolonging June’s orgasm until he let out a third and decidedly more thick rush of cum from his huge tip.
They parted with a wet slurp, and June fell to the side in the back seat. Together, they panted and gasped, her massive chest still swelling little by little and swaying up and down with huge jiggly movements as her impossibly big and firm natural tits began to sag ever so slightly from their sheer round weight.
They both stared at her slow growing chest as she hit a plump H. Then an I. Both their eyes widened as tits reached twice the size of her head, the nipples an inch long and the areola puffy.
“Eh, big enough.” Ty shrugged, laughing and sweating as their nasty juices poured off of him.
June, too, had soaked the leather seat with fluids. She grabbed under her massive bust and lifted them, in awe, dropping them down and watching them bounce and jiggle. She did it twice more, blushing, and squeezed the sides, pressing them together and touching her chin with the cleavage. She released and watched them bounce back.
“Hey...” Ty grinned, “Why should you get all the fun, pet? Those are mine too, remember?”
“How could I forget...” She blushed, watching as Ty grabbed her left tit in his hand and caressed it, lifting the huge mammary to his mouth and gently sucking her nipple.
June whimpered, punished from the pleasure, and began to squirm. The hot scent of sex filled the car.
At that moment, there was a firm knock on the tinted window. They both turned in horror to see a police woman standing next to her squad car.