"And you're sure this would all be safe?" Jay asked, sitting on the black leather couch of the apartment him and his partner Tina shared.
"I've been promised it's safer than taking a plane let alone that hour-long commute of yours" Tina boldly declared with no real evidence in an attempt to comfort her boyfriend on the safety of the app she'd been excitedly explaining to him for the past hour.
Tina, the 23 year old freshly graduated design student, was more than excited about the new app her friend had showed her last week. To be more specific, the extremely experimental unreleased app her friend Sam had given her after plenty of begging and only with the promise that she'd treat it like a real beta test and report everything.
Tina had her ideas as to where the app came from, Sam's nerdy, recently hired my a mysterious tech company boyfriend sprang to mind. But Tina didn't care about that part in the least, she was far more interested in using this app to sate her own curiosity, among other desires, with her boyfriend.
Jay himself was as curious as anyone would be when approached by their partner with an app that can seemingly break the laws of physics and modify human sizes. The things Tina was talking about doing on the other hand had him hiding a hard on while he pondered the safety of it all.
"I mean if my darling girlfriend wants to do this, who am I to disappoint her" He said with his doubts seemingly assuaged.
"Yay! thank you so much sweetie, I promise you'll love this just as much as I will!" She bounced up and down like a kid finally about to open a Christmas present they waited all night for.
"So how do we start?" Jay asked as he got up from the couch to see what Tina was fiddling with on her phone.
"The app pairs with anyone within a certain radius so we can start right away!" as she said this Tina handed the phone to Jay and pointed to a few settings.
"This slider will change my size up to the limit I set so feel free to make me as small as it lets you" she said with a wink as she slowly leaned into her boyfriend with her lips by his ear.
"And I can't wait to see how big you get" She whispered into his ear seductively as she began to slowly rub her boyfriend's crotch.
With that encouragement any resistance to the idea Jay may have had left vanished, just as quickly so did 6 inches of Tina's height as he gave into her charms.
For Tina the change was instant and jarring as her already petite 5'6" frame dwindled down to 5' flat, From Tina's perspective her already 6' boyfriend seemingly gained 6 inches of height in the time it took her to blink.
This change was both terrifying and exhilarating at the same time as Tina went from barely looking up to meet her boyfriend's vision to needing to crane her neck to do so, this simple change made her far more excited than she thought she could get as she began to undo Jay's belt.
"Let's see how this guy looks at this size" She giggled to herself as the pants came down and out came Jay's erect 5 and a half inch cock. "Someone's happy to see me shrink isn't he" before he had a chance to respond she had already started to suck his dick with an even tighter set of lips than he was used to.
"Think I can still take this whole thing at this size?" she asked, more as a challenge to herself than anything as the only response she got from Jay was moans of pleasure as she kept going.
On the next pump she took his whole cock in his mouth and struggled greatly with the last inch as she took it into her throat just barely succeeding with the task she set out for herself.
"How about we take this to the bedroom?" Jay barely got out through his moans, "I thought you'd never ask" Tina responded with a devilish smile that boiled with lust.
The two darted towards the bedroom all the while doffing what clothes they had left, a particularly easy task for Tina who was already wearing seemingly oversized clothes.
As the two landed on the bed together Tina rolled on top of Jay and hovered her now bare pussy over his awaiting member, with his hands landing naturally on her hips Jay pulled Tina onto his eager cock.
Shock filled her body as Tina took in this dick, seemingly at a much larger size than she was used to, the pleasure from the insertion set her senses on fire as she craved more.
She began furiously riding up and down Jay's thick member, the pleasure of which blinded her to her partner's subtle use of his phone as she was suddenly shrunk once more, another six inches placing her at 4'6".
The pleasure was out of this world for Jay as the pussy he had been fucking so often recently got incredibly tight to the point he may finish in just a few pumps at this rate.
For Tina this change in size felt like more than she could handle as the cock inside of her grew proportionally larger and now bulged just under stomach with every pump, the pain of taking in such a massive object melted with the pleasure as she continued her efforts albeit while occasionally taking in a little less than the whole member.
Noticing this Jay grabbed his now beyond petite girlfriend by the abdomen and pushed his way deep inside her as she wailed in what he hoped was mostly pleasure, this seemed to completely stun Tina as her eyes glazed over from the action.
Leaning up towards her ear he asked her "Do you want to get smaller for me baby?".
The pleasure had nearly made her pass out but hearing that jolted her awake as Tina couldn't help but imagine the feeling that would follow her shrinking, she gave a timid nod, not completely sure whether she should but indulging all the same.
With that she shrunk again, this time only losing another 3 inches to both her joy and dismay as some part of her wanted to be even smaller while the rest of her mind was busy dealing with the feeling of growth inside her as the already massive cock grew once more for her.
The increased tightening made Jay understand neither he nor Tina would last long at this rate.
Rolling over Tina was now underneath Jay, her seemingly almost 8 foot tall boyfriend, she pondered to herself the specifics of their size for mere moments before the giant before her drove his massive cock into her now barely large enough to contain it pussy.
The pain alone felt like it could knock her out but the overwhelming desire for the pleasure she was feeling right now completely removed any other feelings from her mind, as Jay started his final series of pumps Tina knew what was coming.
Both of them began to moan furiously as all the two could feel or think about was the pleasure they were feeling right now, Jay realizing his estimations from before were useless now began to thrust as fast and deep as he could knowing he wouldn't last another minute like this.
Being on the receiving end of this final series of thrusts made Tina's mind go blank with pleasure as she came furiously from the greatest pleasure she'd ever imagined.
Feeling the spasm of her orgasm Jay finally pulled out and came just as she did, a massive torrent of cum flooding from his cock, underneath him Tina recovered from her orgasm just long enough to see her looming lover deliver far more cum than she thought possible all over her stomach completely soaking her in his juices.
"Fuck me that was more than I expected" the giant known as her boyfriend exclaimed, quickly rushing off to get her a towel to clean up and bathe in the afterglow of that perfect orgasm.
Tina cherished the feeling of being coated for a few minutes before wiping herself off and nuzzling into her massive boyfriend's chest.
"We definitely need to do that again" Tina said with more than a hint of enthusiasm "after the soreness goes away that is" as she began to feel the after effects of what they'd just done.
Worth it she thought to herself before her thoughts were interrupted by a question from Jay "How small could I have made you by the way?" he asked curious as to how far she would have gone.
At this point she'd completely forgotten about the app after everything that happened, "I don't remember what I set as the minimum actually" she realized in the moment, "are you getting curious about this stuff now?" Tina asked, flashing a haughty smile impressed that she'd converted her boyfriend so easily.
"Well I was just thinking it would be a waste not to try it out, you said we were testing it after all"
"In that case take me away darling, I'm curious to know just how small I'll get" although a bit nervous she did want to push things as much as she could.
As he swiped his finger across his phone moving the slider as far left as it could go Jay watched Tina dwindle from her previous height of roughly 4 feet tall down to 3 feet as she crawled further onto his chest, barely even feeling a difference in weight he continued to hold his finger as she continued to shrink.
Tina was in awe watching her boyfriend go from something that resembled a large human to more of a bed sized object, she was amazed at the scale of it all until she realized she was still shrinking.
How far did I set this she began to ponder to herself, she began to worry when she would stop, soon she was no longer laying on Jay's chest but standing in order to be eye level with him.
But it just kept going.
Soon she was staring upwards at the face several times the size of her own body, she couldn't have been more than three inches tall, suddenly the world grew even faster as she realized the shrinking would make her perceive the world as exponentially larger as she got smaller and smaller.
She eventually stopped shrinking at what she estimated to be half an inch, Jay's chest had become a massive field made of alien material, his lower body seemingly spanning miles into the distance, all the while Jay himself seemed to have grown into a distant god peering down on her.
"Wow you're into weirder stuff than I thought babe" The titan began to speak, from Jay's perspective it was barely average volume but to Tina it was a shock wave she could barely understand as she held her own ears to lower the ridiculous volume she was faced with that suddenly erupted from the god's mouth.
In that moment Tina realized her own insignificance, she trembled in fear of course, but also in overwhelming pleasure as she stared up at the man who had nearly deafened her with a few quiet words.
I'm going to really enjoy this app, she thought to herself as she gazed in awe at Jay and the overwhelming landscape he had become while slowly began to bring her hand lower to a part of her body that was already eager for more, realizing they had just scratched the surface.
Tina was sitting on the couch on a nice snowy day, cozy as could be in Jay’s hoodie and cotton pj shorts when suddenly she hears the familiar sound of keys in the door.
Jay threw open the apartment door, “Oh my god do not go out there it’s freezing”.
“Welcome homeeee” Tina shouted as she rushed in for a hug before suddenly stopping.
“You’re soaking wet baby, get out of those clothes so I can hug you to warm you up already”.
Jay started to remove his coat and walked over to the bedroom to change “Sorry to say T but you may be a lil too small to warm me up”.
“Oooo, is that a challenge big guy?” Tina excitedly followed behind Jay sensing where this was heading.
“Well you made it sound like so much fun so if you let me get changed I-” as soon as the words left his mouth he realized he wouldn’t have time to change tonight.
For Jay he was nearly instantly buried in damp slightly musty fabric and complete darkness as he was enveloped by what he could only assume were the clothes he was already trying to escape from moments ago.
“Hehe sorry I just couldn’t wait, I've been looking for an excuse to do this all week” as Tina walked up to the pile and began to carefully fish Jay out of his own clothes.
“And knowing you wanted it, I just couldn’t wait” as she finally found the tiny body she’d been looking for Tina couldn’t contain her glee.
“Oh my god you look adorable like this” Bringing Jay up to her face to inspect his new diminutive stature she looked over his naked form like a child inspecting their new toy.
“T I know you’re excited but I am absolutely freezing and this is kind of terrifying I didn’t think you’d make me this small so soon” Jay’s whole world had gone from pitch darkness to being raised to his girlfriend’s enormous face at speeds equivalent to a rollercoaster.
Standing on his girlfriend’s bed sized hand he estimated his size to be 6 inches.
He was now staring up at a face the size of a small house as it suddenly began to speak, thankfully in a whisper.
“Aww I’m sorry babe I just had so much fun when I got tiny so I wanted to share that with you” she said with a slightly apologetic look on her face.
“For now let me help you out with those chills hehe” as she finished her sentence Jay found himself in slightly cupped hands as Tina opened her mouth wide.
Suddenly Jay was enveloped in Tina’s warm breath as she created a warm breeze with her mouth for him. It smelled slightly sweet like she’d prepared for this with something sweet to eat.
As the feeling returned to his fingers Jay gazed up at the enormous mouth before him. His fear began to fade as he realized this giant was still the same caring woman he fell for long ago.
“Thanks for that babe but I was hoping for a longer term solution and I don’t exactly want to go in there” Jay said pointing at the cavernous maw before him.
“Just a taste I promise” she teased him bringing her mouth closer before pulling away
“But don’t worry I wanna make sure you enjoy every bit of this like I did” as she said this she began to walk back towards the couch.
“Although I do still have a teeny bit of work left to do so I can’t give my little man all the attention he deserves quite yet”
Jay was suddenly brought lower as her hand guided him towards the pocket of his hoodie she was wearing.
“So warm up and relax in here while I finish things up and I’ll be right with you”
With that Jay was left in the tent sized space of the hoodie pocket “Well it’s nice and toasty in here at least”.
Despite it belonging to him the scent that surrounded him was undeniably Tina’s, slightly of sweat from the warmth and slightly of the coconut body wash she often used.
“At this point I don't remember the last time I wore this thing” He chuckled to himself as he laid down in “his” sweater and settled into a comfy position to wait for his girlfriend to finish things up.
Jay slipped into a nap as he listened to the rhythmic tapping of the keyboard Tina was using above him but before long he was awoken by the commotion made by Tina’s hand entering the pocket.
The massive appendage barely registered as a hand to him considering it was nearly as long as he was tall and far more massive. Without warning the hand went limp and came to a rest on top of him.
Whether she was doing this to mess with him or try and comfort him Jay was shocked by the strength and weight of her hand, just by placing it on him he couldn’t move an inch. He struggled in vain to budge the hand but to no avail, he accepted his fate under the hand.
Up above Tina was hard at work albeit at a slower pace while she reveled in teasing her tiny boyfriend with nothing but her hand, as she felt him begin to resist the excitement took her mind off work for a bit as an idea popped into her head.
Just as Jay began to settle underneath it, the hand on top of him sprang to life, the massive digits began to work with far more dexterity than his brain considered possible for objects of that size.
The middle finger deftly pinned him down while the thumb and pointer finger began to massage his crotch, the massive erotic massage quickly got him as hard as could be while the massage transitioned into what could technically be described as a “hand job”.
The massive fingers stroking his erect cock seemed to increase in speed bringing him straight to the edge of orgasm, the massive fingers felt better than a hand ever could as they enveloped his entire shaft.
The feeling of being pinned down and overwhelmed by just one small part of his usually petite girlfriend seemed like something he may just become obsessed with as the fingers seemed to react to his pleasure by finishing him off with consecutive slow and then fast strokes.
His orgasm came powerfully as he spurted a far larger amount of cum than usual, the load splattering all over the fingers above him seemed to elicit a giggle from far higher up outside of the pocket.
The hand left just as quickly as it had arrived and as he lay there panting from the amazing orgasm he just had, suddenly another hand entered, this time with the intent to retrieve him it seemed.
Pulled from the pocket and once more held in front of Tina’s face he noticed the smug expression she wore and blushed a little.
“Someone enjoyed that didn’t he?” Tina asked sarcastically while eyeing the cum that now covered her thumb.
Just as quickly the thumb entered her mouth as she seemed to lick the cum straight off of it and swallow.
The massive load Tina couldn’t have swallowed on her best days had disappeared down her throat in an instant Jay thought to himself as he realized just how tiny he was.
“And while someone was warming up I got plenty done, including thinking up a little game for us” The eager smile Tina wore evoked some unease in Jay but the orgasm he just had made things clear he’d enjoy whatever happened next.
“To make sure you learn to enjoy shrinking as much as I do, I'm going to take two inches off your height every time you cum”.
“Wait, that's about a third of my size isn't it? How small will I get?” Jay was a little worried, he was already tiny from his perspective he couldn’t imagine being any smaller.
“Hehehe well that depends on you doesn’t it sweetie, and besides I got much smaller than you are now, trust me you’ll love it” as she finished speaking she reached for her phone and began to move the slider once more.
The hand he was standing on began to expand as it went from the size of a large bed to the size of a small bedroom, the starry eyed face of his girlfriend staring down at him went from the size of a small house to a two story building.
The exhilaration of his previous orgasm had merged with his fear at his new stature to create a new feeling he couldn’t quite comprehend, he knew he was going to experience a whole new world tonight.