After swim practice, Peter was alone in the locker room, struggling with the largest shirt he had at school. However, his new bulk (although signifigantly smaller than when Joce first experimented with her new parted) was too much for the shirt, leaving his arms and head tangled in the white cotton. He was so busy fighting he didn't hear the locker room open and closed, and the lock being bolted in. He only noticed he wasn't alone when two feminine hands began tugging at the edge of the shirt.
"Need some help, Peter?" Joce appeared into view as he was freed from his cotton prison.
Peter blushed a little. "Yeah....none of my shirts fit! Guess you made me a bit too big!" As if to make a point, his pectorals seemed to bulge as pulled the last sleeve off.
Joce was trying desperately not to stare, or use her new power. "I'..I'm sorry. I should have asked you what you wanted before I tried this out." She ran a hand over his naked chest, the epitome of good swimmer's body. "But I really like you, and the sight of you growing just-" the both were startled as as Peter's flesh rippled and the very pectorals Joce had been admired began to fill out, pushing out against her hand first like a pillow before becoming rock hard. Joce's hand stroked it affectionly, entranced. "...Turns me on...Ack! Guess I need to learn some self control! I'm sorry, here you wanted to fit into your shirt, not grow larger..."
She stepped back, a tad shame-faced, not noticing Peter's blush. She did notice the tent that had grown in his swimming trunks. "Oh. Oh!" The shame was quickly burning away, replaced by a growing desire. "You like that, too?"
Peter's blush grew redder. "The way it felt...and you looked so great while you were enjoying it...Yeah. That was great..." His voice trailed off as Joce's finger traced the outline of his pectorals, circling his nipples.
Joce grinned, an idea forming in her head. "Do have an old set of bottoms you don't mind ruining?"
Peter nodded dumbly. "Good. Put 'em on, then meet me in the showers. Oh, and..." Peter moaned as he felt the tingling warmth of change travelled into his shoulders and down his arms. Joce almost squealed in delight as his biceps seemed to inflate, pushing his arms out, and his shoulder rounded out to the size of melons. "You may want to barricade the door."
Peter grinned, and flexed, enjoying the moan of pleasure Joce let loose, as she rubbed a cheek against the bulging muscle, all too ready to continue this game. She practically ran to the showers.
Peter had changed into a ratty pair of old bikini trunks, and was in the midst of shoving a a chair under the door knob when he understood why Joce had inflated his arms before continuing the game- while not big, she had given him more than enough power to easily bend the metal to render the door completely unopenable. Something told him Joce had every intention of making sure she fully got to appreciate her new boyfriend.
When he entered the communal showers, Joce sat on the bench, divested herself of all her clothing save her simple cotton bra and thin panties. She patted the bench, directing him to sit down. "Let's get you out of those those nasty old things."
She let a finger trace along the edge of the trunks, and Peter moaned as she thought of his buttocks growing and firming to excessive size. The trunks, made of spandex, stretched to contain what could be mistakened for halfed volleyballs.
Joce tsked. "Seems they're tougher than I thought. But we can fix that." She traced her finger down the front of his trunks, going right over the growing tent as her voice and the warm sensation of growth led to his erection. Everywhere her finger touched seemed to balloon, his lower abs rising like bread; his tent first widened, then grew longer, the head almost visible through the straining fabric. The tent grew from a single pole to three as his balls grew to match his now 9" inch long, 1" thick pole. But the spandex still wouldn't give up its fight.
Joce pouted, clearly not ready to give in. "I guess this calls for a change of plans. Kinda silly to leave you shaped so wrongly."
Peter looked down and laughed. His butt was now larger than his hips were built for, looking like a giant blue pillow in the trunks. His laughter was cut off as Joce stepped over him, straddling him above his genitals.
"I want to be more hands on here, and I don't want to have to shrink you to kiss you." She grinned and did just that. Peter responded before moaning into her mouth as the tingling ran up his abs to his chest out. Joce giggled and squealed as his body blossomed underneath him, pushing under her hands and legs. Gone was his swimmer's phisque, as pound after pound on his 6'3" frame. Peter idly trace a hand down her back as she concentrated, spreading the growth to his legs, his quads and calves ballooned, touching, then forcing his legs straighter.
Joce paused to admire her handiwork. Peter's pectorals were so large they pressed against his chin, and she bare was able to reach his lips. His shoulders were now bowling balls, and his biceps were so large his arms rested at 45 degrees, and that still forcing his pectorals out of the way. And his waist...When she first had wrapped her legs around him, her legs had crossed at her calves; now his muscles had pushed her legs so far out only her toes touched.
Peter was amazed, running a hand over his chest. His pectorals were so large he could fix his entire hand up to his wrist in the crack between them. He strained his now massive neck to watch himself flex his arm, marvelling at his massive gun. It had to be 30 inches at least. "Whoa. I'm huge!"
Joce practically drooled at the mass of muscle in front of her. She trailed wet kisses on the huge plates in front of her. Peter was estatic, squirming slightly under her ministrations. his dick rubbed up against her butt crack, and Joce paused. "That's right, I forgot my original plan! We'll get you out of that speedo in no time, now."
Joce commanded Peter to get up, while cradling her in her current position. She directed to lean against one end of the shower corridor. New position established, she practically climbed over his pectorals and hungarily kissed him again.
Peter could feel the warmth spread through his legs, his quads forced his legs out to a wide 'v'. Then it traveled upwards to his penis, concentrating so much he felt almost as it it was on fire. Thee sound of ripping fabric was barely heard over the intensity he felt.
After what seemed like an eternity, Joce came up for air, grinning. "You can let go of me now."
Peter, confused, released his grip on her, and slid down, a full...foot. It was then Peter saw what she had done to him. He had expected a ten foot pole from the intensity of the change. Instead, it was still a mammoth piece at a full 4 feet long.
Joce tried to wrap her legs around the circumference of the member, but failed. She may have overdone it when she had pictured his dick the size of a trash can, but the feeling of the giant member rubbing against her crotch and legs was orgasmic.
Peter looked at his dick in awe. Even his large hands couldn't wrap around it fully. It was fully erect, standing out impressively like a steel girder. He bent down, trying to judging its weight- it had to be 60 pounds, at least. His hand brushed his balls. Before, they had been gigantic in proportion to his dick, being the size of softballs, but now with his massive log they felt like marbles.
Joce saw his exploration. "Did I forget something?"
Peter nodded. "These aren't going to support this monster."
Joce nodded, then rocked back and forth, eyes closed in concentration. The motion drove Peter wild, and began to buck his hips slightly. The warm sensation in his balls.
First they forced his legs apart wider, before one, then the other were forced forward in front as they swelled in size. He was vaguely aware of them brushing his thighs, then his knees...
Joce wrapped her legs around the monster she was sitting on, squeezing them against the hot pulsating flesh. Peter groaned, his attention now solely on her ministrations.
Only after he felt the bottom of his balls brush the cold tiles of the floor did he realize how large he had become- had his legs hadn't been as strong as they were, he would have collapsed by the weight of the two massive flesh bags, each now the size of over stuffed bean bags.
Joce wasn't finished, however. They continued to grow, now forcing her perch upwards as they reached the size of sofas.
The growth was finally slowing, and Peter heard Joce's voice in his head. 'To you, my legs feel like the walls of a vagina, tight and wet and only for you'.
Peter began bucking faster, his hands grabbing her shoulders and then her tits, still encased in her thin bra until he ripped it off her. Not really thinking anything save their mutual pleasure, he did the same to her panties. Both now were naked, Joce pressed against the swelling flesh of his chest and manhood, and Peter thrusting through her legs, the pulsing flesh setting her clitoris on fire. Both screamed as they orgasmed. Peter's giant load fired like a cannon, hitting the far wall so hard it broke several tiles free.
Both sank to the floor, sated; Peter's sofa balls and trashcan penis deflated to the more managable size of grapefruits and 18 inches; however, it stuck out with the circumference of a coffee can.
Peter looked down to see Joce cuddle his arm...only to notice his chest had again ballooned outwards, and his arms were now almost the same size as Joce herself. He didn't mind however; in fact, the idea of being so huge as to fill the entire locker room, engulfing Joce with his pectorals alone sounded so good.....