Growth and the Unexpected

I couldn't believe I was absentmindedly bouncing Amy's bare boobs up and down and watching them jiggle, as my sister's hand ran up and down over my clothed bulge. She carried on with her homework one handed, looking annoyed but determined. "Get it together, girl," she whispered to herself. "Come on, this isn't that hard." The only way this could be better is if she were bigger, I mused idly.

'Could I?' I thought with a start. I'd never seen that in any videos, but sometimes it came up in stories. Well, porn movies didn't have much by way effect budgets. I had already made cum vanish into thin air, I had to know if it was possible. “Your boobs should be bigger,” I said, struggling to keep my voice steady.

“Your boobs should be bigger,” I said, struggling to keep my voice steady.

“Tell me when,” she replied in a detached, disinterested tone, not even glancing my way. I felt her breasts swelling in my hands, first a gentle pressure against them, then pushing inexorably outward. I watched them grow, apples becoming oranges, feeling the flesh contained in my hands increase. Amy shifted slightly in her seat trying to get comfortable, gradually leaning further back as her chest pressed outwards, turning slightly so the one arm still typing wouldn't press into her ever-increasing sideboob. They went from oranges to small melons, filling then overflowing my grasp like soft, warm pillows. I couldn’t help but grin maniacally as her body did the impossible just because I asked.

“Stop,” I said finally, and I imagined I actual felt them jerk to a stop, my hands now resting atop two massive, perfect mounds, each nearly the size of her head. They were enormous, round, full, heavy, and so big that they I was certain they would threaten to hit her in the head if she were to jump too hard. I fondled them, feeling their new heft, watching their new bounce, lightly hitting the so I could watch then jiggle like jello, savoring the way they felt, before I backed off so I could take in the full sight of them.

I pulled her other hand off of my clothed dick, and watched her work for a bit just so I could gaze at gentle jiggle, trying not to laugh as her new bosom got in the way. I couldn't believe how much watching her body change turned me on. I was too excited to stop now, and I figured that if I could change her boobs, I could do something even crazier.

“I want to fuck Scarlet Johansson,” I declared, expecting to watch her entire body transform into my favorite actress before she turned and fucked me on her desk.

Instead, Scarlet Johansson appeared, naked and fully impaled on my no longer clothed dick, as my sister kept working. I fought for balance and manged to heave us both up onto Amy's desk, sitting down hard with Scarlet on top, my hands on her hips as I held her steady. Amy looked mildly annoyed, though only because this caused everything on the deck to jolt a bit, and began fixing it all up without a glance at the two of us right next to her keyboard.

“I’m always happy to meet a fan,” Scarlet said, looking me in the eyes, sounding like she was agreeing to give me an autograph. She began to fuck me, her movements slow and deliberate, the desk shaking lightly with her motions, arching her back and letting her small but firm boobs bounce for me to admire, her nipples already hard.

I couldn’t help but compare them to Amy's. Scarlet’s were larger but firmer then Amy's had been, but of course they didn't hold a candle to my sister's stupendous knockers now. I couldn’t tear my eyes away from the sight of Scarlet toned and athletic body riding me. Scarlet’s toned thighs flexed with each downward thrust, expertly varying the angle at which she sat on my upthrust dick, grinding on me when fully impaled. The desk creaked beneath us, the wood groaning softly under the weight of our fucking. Her rock hard nipples brushed against my chest with every movement, and I could feel the dampness inside her increasing as she picked up the **** and pace of her fucking. Her body was a study in contrast—toned yet soft, athletic yet feminine, her muscles rippling as she wrapped her athletic thighs around my waist and adjusted her grip on my shoulders to leverage herself further onto my pole.

The increasing shaking of the desk itself finally became too much for Amy, who gave up typing and sat back to read over some things, having the adjust awkwardly adjust how she held her book a few times to see it over the swell of her stupendous new rack, however her behavior made it clear that it was just the shaking causing her issues; she couldn't care less about the pair of us fucking mere inches from her.

The pressure built inside me with Scarlet's every thrust. My orgasm and I let out a guttural groan as I thrust into her, spilling my spunk deep inside the starlet's cunt. Scarlet screamed out her own pleasure as her body tremble above me, her inner walls milking me in rhythmic pulses.

“Did you want to use me some more? Should I have your baby?” Scarlet asked as if I were a director giving her instructions. Amy put down her reading and resumed typing.

“Nah,” I said firmly my voice cracking but also a bit annoyed to be pulled out of the moment. “Unless I explicitly say I want someone to have my baby, can everyone just assume I don’t?” I said with a sigh. I never thought that, of all things, could so so rapidly becoming annoying to deal with.

“Okay,” she replied, her fingers tracing lazy circles on my skin. “You can use everyone however you want. Anything else?" she asked again. I gazed at her tight body resting on mine, and seriously considered doing more with the naked actress. But right this instant, another idea I couldn't wait to try out had formed. If I could make her appear once, I could do so again later.

I shook my head and then she was gone, disappearing back into thin air, leaving me sitting there with my dick in the air, my mind reeling from everything that had happened. I saw Amy closing the file, and she stretched, hands together over her head, chest thrust out, boobs standing proudly, as she bent side to side, then stood up. She didn’t look at me or acknowledge me in any way, simply throwing herself on the bed and grabbing her phone, her new boobs a giant cushion beneath her. I stood there watching her scroll on her phone, completely oblivious to what had just gone on.

(I decided this might be a going a bit beyond a wish for Freeuse and into outright reality alteration, so I went another way with the story. I am leaving this here if anyone else wants to follow it up or if I decide to make an alternate path later.)