(Original story posted July 10th 2022) This story has been Updated!
“Oooh yeah, these’ll do perfectly” Josh grinned as he pulled a pair of white Calvin Klein briefs out of the hamper before giving the pouch a sniff. He shivered at the lingering scent of cock and balls that clung to the fabric. Making sure to savour it with a few deep inhales before reaching into his pocket and pulling out a tiny vial of strange glowing liquid. “This stuff had better work” He mumbled to himself.
Earlier that day Josh had stumbled across a small shop just outside town that he’d somehow never noticed before. It was tucked away with a single pathway that led towards the shop. It wasn’t any normal shop though as both the sign on the outside and the man running the shop claimed to be selling truly magical items.
At first he assumed it was all tricks and scams as most normal people would. That was until the owner took a small bottle from the shelf behind him and took a small sip to prove that what he was selling was the real deal. One could only imagine Josh’s shock as he watched this bald middle aged man suddenly grow a full head of thick salt and pepper hair. Flawless hairline and all. Needless to say the sceptical younger man was a bit more inclined to believe after that. And so, after the shock had worn off, this led to him browsing the shop's many items himself.
Josh stopped when he came across another particularly eye-catching potion. ‘Form Exchange’ the label read. Josh’s eyes lit up upon reading the description for it. It was a potion that allowed two people to exchange physical forms and the only additional requirement was to be wearing an article of clothing blogging to whomever you wanted to trade with. Immediately he just knew he had to buy it.
This led to Josh essentially breaking into the house of his former college professor, Richard Harrington. He’d been drooling over that man his entire way through college and was the reason he wished he didn’t have to leave. The only reason Josh passed the course was because the only thing stronger than his desire to stare at his sexy professor’s ass in those fitted suit pants was his desire to make the older man proud of him. With this potion however, he could be closer to Mr Harrington than he’d ever thought possible.
That brings us back to the present with Josh giving his teacher’s used briefs another long deep sniff. It smelled even better than he’d imagined. If hadn’t been so excited to see the results of the potion, he would have stood here all night huffing Mr Harrington’s scent.
He managed to compose himself before popping off the cork on the potion bottle. He didn’t drink it though. Instead he’d been instructed to douse the chosen item of clothing in the potions magic. So that’s what he did, gently pouring the glistening liquid over the soft white fabric. He expected it to stain but instead the potion was absorbed almost instantly with hardly any trace. Seconds later, the briefs glowed for a brief moment with a magical aura.
His heart was already racing with excitement as he stripped off his clothes, all the while not being able to get the image of Mr Harrington out of his head. Specifically the time said teacher crush had bent forwards right in front of Josh, giving him the spectacle of a view that was Mr Harrington’s thick daddy ass stretched tight across the back of his pants. It was a memory Josh had long since carved into his brain, never to forget. Needless to say by the time Josh was nude and ready to slip on the briefs, his cock was hard as steel.
He took the briefs before pulling them up his legs until they rested nicely over his ass and crotch. For a good few moments he didn’t feel any different. He just felt like a pervert wearing his old professor's underwear. Josh stepped in front of the long full length mirror sitting in Mr Harrington’s bedroom to see if anything had changed. At first there was nothing, causing him to sigh outwardly. Maybe what he’d seen in the shop was just tricks after all and he’d done all this on a con. Oh well. At least he could steal these briefs and a few other pieces of his professor’s clothes to jerk off over.
Just as he was about to take them off however, the briefs glowed once more…
Josh couldn’t help but lurch over slightly as he felt a sudden shock of energy course through his body. An otherworldly blend of pleasure and heat pulse around is crotch. Within moments the bulge in the professor's briefs started to grow and fill out the pouch more comfortably than before. His already decent sized cock thickened considerably and gained some noticeable length. The pure sensitivity as it engorged caused Josh’s face to twist with ecstasy. His balls followed the same example, his sack feeling fuller and heavier by the second as his nuts grew into large testosterone producing and cum churning factories. This in turn caused the hefty tip of his dick to drool, creating a small patch of precum on the briefs. Josh swiftly pulled open the front said briefs to find a new cock that certainly wasn’t his own but judging by how perfectly it filled out the pouch, he had a pretty good idea who it belonged to. Or used to belong too anyway…
The bulge only continued to grow as his dick grew stiffer by the second, swiftly returning to its rock hard state. Only now his erection was much more impressive than it had ever been. Fat and throbbing as it threatened to burst through the underwear. Josh would’ve been more focused on that had it not been for the warm sensation he felt building in his backside. Turning his rear to the mirror, Josh was greeted with the sight of his once average butt expanding and filling out the back of Mr Harrington's underwear as if they were his own. He ran a hand across his thickening ass, enjoying how supple it looked and felt. It was unmistakable. That was very same he’d nutted over time and time again to the thought of fucking it. It was Mr Harrington’s ass. And now it was his! Josh wanted nothing more than to rip off the underwear and start grabbing at his new bubbly teacher butt.
Unfortunately he was soon distracted by the sight and feeling of his waist tightening a little before his torso extended, slightly increasing his height. His height would only continue to increase as his legs were next to experience some changes. They extended somewhat, pushing him taller, before thickening with some extra size. The bulking of his legs wasn’t massively noticeable due to Josh’s already somewhat large thighs and calves. He’d always considered his legs as being one of his best traits. Though that didn’t stop them from getting stronger and firmer as what was once fat making his legs look thick was quickly replaced by seasoned muscle. He could feel it immediately. His legs felt powerful as fuck! And his thighs… god if they weren’t his own he’d want to shove his dick between them until he spilled his load.
Josh hummed in anticipation as the next change began to make itself known. The heat traveled upwards towards Josh’s torso yet again. He could see the change immediately and a cocky smirk couldn’t help tug at his lips. Most excess fat around his stomach region melted away, giving rise to an incredible set of abs. That however was swiftly overshadowed by the fast ballooning of his chest. Josh couldn’t help letting out a soft moan as his once flat chest heated up with the flow of transformative magic gushing into them. He did his best to bite his lip as a pair of perfectly sculpted pecs swelled out before him. They were so irresistible that Josh grabbed them almost on instinct before starting to knead and caress the new pillowy muscle with a face full of bliss. Hardly even taking notice of how the heat had moved towards his back, causing it to broaden his figure. During this he couldn’t help but let a few more grunts escape his lips as the feeling briefly returned downwards, causing his toes to curl as his feet began to stretch and grow slightly.
After that Josh’s arms began to buzz with energy. His traps and shoulders were first, bulging larger and and more rounded in a way that gave his growing form an even more masculine shape. It then moved down to his biceps and triceps. Filling them with satisfying warmth before filling them with power that caused them to inflate. Bulking them up considerably with size and definition Josh never imagined he’d have. Lastly capping things off with some extra beef in his forearms and the subtle growth of his hands.
Everything below his head had changed. Every part of his body. He’d gotten taller, more muscular and certainly more well endowed. But most interestingly Josh could feel the maturity of his new form as well. Though his body felt stronger than ever, he could also tell that it’d aged. Displaying the form not only of a fit man, but a fit middle aged man.
It wasn't long until an itching sensation galloped across Josh’s entire body paired with the same heat that’d been changing him so far. Hair began to spread across his chest, abdomen, forearms and even a little across his ass before finally coating his legs to match. But it didn’t stop there. Some of the hairs that grew over his chest even began to change colour to that of a dark grey to really help exemplify the new age of Josh’s body.
Now all that was left was Josh’s youthful face. It wouldn’t stay that way for long though as the pleasurable heat was moving swiftly up and over his head. His jaw hung agape as he hummed in pure euphoria, his head already beginning to reshape itself. His features shifted as they grew older and more mature. The small bit of facial scruff that covered his face grew into a full but short and well kept beard while his hair restyled itself. All the while his eyes changed colour and lost their youthful glow in exchange for a wise and manly yet still soft look. Then all that was left was for his hair to pepper itself with a plentiful amount of silver and grey hairs to truly complete his hot dilf look.
Finally his transformation was complete.
None of it even felt real at first. Like it was all some extremely vivid lucid dream. But no. This was real. The potion was real. The man staring back at him in the mirror was no longer the young 22 year old who’d had a desperate crush for his college professor. He couldn’t believe it but… the man staring back at him was that very man! He was Mr Fucking Harrington!!!
If Josh wasn’t so focused on groping and squeezing every part of his newly transformed body, he might’ve noticed just how much his pupils dilated with raw unfiltered lust while staring at his new reflection. His new cock twitched, leaking even more precum when he heard his new voice for the first time. It was so much deeper and with such a natural authoritative edge to it that made Josh feel more manly than he ever had in his life. And his moan. Oh his moans! Hearing the low rumble in his throat as used his hot professor’s voice to make such needy, pleasurable noises was sending him over the edge!
He must’ve spent the next hour in front of that mirror worshiping himself. Completely and utterly entranced by the body he’d stolen. He’d touched and explored every nook and cranny of his newly acquired form. Naturally it wasn’t long before he’d whipped out his fat daddy cock and jerked it with an almost animalistic desire. Needless to say he splattered the mirror many of Mr Harrington’s belongings with his dilf ball batter countless times already, eagerly lapping up every drop afterwards. Despite his mature age, that didn’t stop his balls from churning out bucket loads of his new dilf seed and it tasted fucking delicious.
Right now the only thing that felt nearly as incredible as worshipping himself and cumming everywhere was the feeling of exploring his new ass.
Josh had eventually found himself sliding his fingers between his firm new bubbly ass cheeks in an effort to explore his professor's juicy looking hole. Seeing as Mr Harrington had been a straight man, Josh’s new hole was extremely tight smd wasn’t expecting any visitors. That said, just one meaty finger was enough to have him both moaning in pleasure and gritting his teeth in pain. He’d certainly need to remember to buy some toys to help stretch out this former straight man’s asshole in preparation for taking some huge cock later down the line. But for now he had to admit that having such a mature yet tight hole was hot as fuck.
Eventually, once he’d finally calmed down enough from his horny escapades and had completely drained his new balls, Josh decided to further explore what his new home had to offer. He didn’t get much further than the bedroom closet though as the allure of trying on a bunch of Mr Harrington’s outfits was far too compelling to resist. Each and every article of clothing fit him like a glove but what he enjoyed the most were the suits. Especially the pants. So goddamn form-fitting. He was almost hypnotised by the way his own ass pressed against the back of them. Just like Mr Harrington. But then as Josh turned back to face the mirror once more, straightening his tie a little, he thought of the funniest thing…
Next thing you know, the now 43 year old college professor is pulling all sorts of strange funny faces while doing silly dances in the mirror. Sticking out his tongue while jumping about like an idiot. He was cracking up while doing it but also found it sorta hot at the same time to see Mr Harrington in the mirror doing these silly dances that the professor would never have done. Seeing the body of the man he obsessed over act so out of character was erotic to say the least. That’s when an idea popped to mind. It was something he’d only ever imagined happening in wet dreams but he was about to make it reality. He turned his backside to the mirror yet again before spreading his legs apart and squatting down a little. And then?… he started fucking twerking! It was a little awkward at first considering Mr Harrington’s body had likely never tried it at first but he quickly started to adjust. He was practically shakin his ass for what felt like over half an hour until eventually he found himself absolutely throwing it back!. Josh was twerking his professors thick ass while wearing his suit and was somehow absolutely nailing it! Looking over his shoulder to see the action, his cock couldn’t help but twitch again.
As Josh was busy shaking Mr Harrington’s ass in the mirror however, the real Richard Harrington was currently across town still trying to figure out how and why the fuck he’d transformed into this 20 something year old guy he used to teach. Too bad for him that any effort to get his body back would be for naught as there was no way in hell Josh was ever going to return his new dilf body!
Josh took one last look at his new self. His mature, handsome and daddy as fuck self. He had to hand it to that magic shop. The potion had worked flawlessly! Now that he was thinking with a clearer mind however, he’d realised that even though he now had the body of Richard Harrington, he still needed the memories to go with it if he was truly going to steal this body and life. He could’ve sworn he saw another potion in the shop that had something to do with memories. Maybe he should pay the shop another visit to finish claiming his new identity and maybe even buy a few more fun magic items while he’s at it…
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