Father’s Day: A Gender Swap Story

Jim loved his wife. His hands moved up her body, enjoying the slight sticky feel of sweat along her back. Her breath came and went with a husky regularity which he knew meant she was enjoying their morning romp. Even with the low sun, the white sheets, white pillows, white curtains, and white everything else Daisy could lighten up managed to spread the morning light around enough to think they were lying on top of a spotlight. His hands moved down again to her hips. His fingers sunk into her supple flesh, digging greedily into her thighs the way she liked it. From time to time, the soft tissue would bruise from his fingertips. She liked that too. She would lie around in her panties mindlessly pressing on the dark circles for some devious hint of pleasure perhaps linked to a memory. She rose and fell on his straining cock as it remained perpetually desperate to stay inside of her. It had started with the warmth of his wife’s mouth around his cock. As his eyes fluttered awake and he registered the familiar slurping, she had released her prize and let it slap wetly against her cheek as she smiled at him. She had climbed up his naked body, dragging her heavy breasts along his form, knowing it tantalized him to feel his cock, wet from her tongue, slide against those perfect tits. Daisy had kissed him while she positioned his cock at the entrance to her already wet pussy. And so she began their morning rut.

From the first day he saw her, he’d known. He wasn’t the type of man to admit it or to acknowledge such a thing could exist in a logical universe, but when he saw Daisy, all of that skepticism was put aside for a moment. They’d been young, well younger. Jim was the scruffy type who always forgot to shave and washed himself with great irregularity. He was still of the age where that had some endearing quality. Daisy had been the opposite, more true to her namesake, all sweet smells and sunshine. Jim noticed her body first as any red blooded man would. She’d been wearing a paisley blue dress that did nothing to hide her form. She attracted the attention of any man within eyesight, but Jim had been the only one brave enough to go up and talk with her. Some people believe that women can be too attractive to the point of creating limited dating options. Jim didn’t believe that. He thought it was a round about way of blaming a woman for a man’s cowardice.

The memory flitted through his mind between bursts of lust, love, and pleasure. She’d turned him down. No reason that she shouldn’t have. He looked like a drowned rat and he smelled faintly of day old whiskey as it leaked out of his pores. But he tried again. Cleaner and smelling of stringent cologne, he found her at a different party. She wore a red top that advertised her breasts well and a pair of black pants that could have passed for tights. Jim knew then that she was entirely self aware of her body and its affect. He enjoyed that about her. He managed to start a conversation that led to another. Within a week they had stolen away to his apartment for a weekend of wild sex. A year later, she teased him on their honeymoon by bending over the railing of the thirtieth story balcony, her ass wiggling at him to get off the bed and fuck her as they lorded over the city. He had obliged.

Daisy dropped closer to him. Her breath ran hot over his ear as her tongue slathered against his earlobe. Her hips bounced faster. She whispered in his ear, “Cum inside me.” Teeth raked against him and he could feel her squeezing his cock with the walls of her pussy. He felt his muscles tensing and his hands groped further up her ass, pulling at the soft globes and trying to drive her further onto his cock. With a loud groan, he erupted inside of her. He felt the rush of pleasure as each pump of cum rushed up his cock and into his wife. She kept moving her hips, but slowly, urging out the hot spunk from his cock. She leaned back and one hand went to rub the top of her pussy while the other pulled and twisted her nipples. She smiled down at him. “Good morning.”

He kissed her in reply while squeezing her ass. She rolled off of him and padded silently into the bathroom. Even with the urgency of sex at its most distant, he still felt a twinge of desire at the sight of her shapely bottom swaying in the morning light. “What’s on track for today?”

“I hoped to get you in a good mood. It’s Father’s Day, remember.”

“And you wanted to show me that I’m your ‘daddy’?” He pulled the sheet up to cover his wet manhood. Propping himself up on the pillow, he reached for his phone and started reading emails.

Daisy returned and crawled into the bed beside him. She swung one leg over his and he could feel the beaded moisture left from cleaning herself. “No. I think that’s well established. But I think Martin is going to come by.”

Jim stomach coiled. “Does he think its classier to ask for money on a Hallmark holiday?”

“I think it’s easier for everyone’s pride to give gifts instead of handouts,” she replied curtly and pulled away from him. She grabbed her own phone and drifted into its pale glow.

Jim didn’t hate his father-in-law. Martin simply bothered him, like a nervous dog that winced any time someone moved. Martin was man that had been hit one too many times. He wasn’t malicious, but whipped. For the life of him, he couldn’t figure out what Daisy’s mother saw in the man. Maybe he’d just been the first shoulder to lean on when Daisy’s birth father died. Jim’s mother-in-law, Pearl, was fire tested. She’d raised Daisy alone for several years. A five minute conversation with the woman could show a lifetime of experience. She didn’t even seem to like Martin herself, but used him as a gopher, an Igor to pull the levers she didn’t deign to manage. Jim thought it was a shame as well. Daisy got her looks from her mother and Jim had no worries about his wife’s beauty declining as she aged. He’d first seen Pearl standing at a bar with an amaretto sour in one hand and an emerald green clutch in the other. Daisy made a beeline straight for her and Jim assumed that the doddering woman soon to be his mother in law waited somewhere behind the cougar scanning the room for a fresh piece of meat. The appeal of Pearl’s refined beauty lessened when Jim found out who she was, but after a drink or two his eyes would linger on her bust line or drift down to her ass when she was turned away. He wondered if Daisy ever noticed, or cared. “Is he bringing Pearl with him?”

“No,” Daisy responded. “She’s gone on some cruise with her friends. Why do you think he needs money?”

Jim grunted. What Pearl had in life experience, she lacked in financial matters. Her first husband had taken care of everything. Maybe that’s why she’d married Martin. She needed a live in accountant to makes sure the bills were paid and that she could pay with a quick handjob once a month. The death of Daisy’s father brought in a rush of cash. Much more than Pearl could handle. At first, it was handled by the executor of the estate, but when Daisy turned twenty five, it had come to her to manage. She couldn’t actually use it for herself until her mother passed away which was forty years down the road unless she had a heart attack while some cabin boy strained on top of her. Daisy made sure that Pearl was provided for, but kept her on a leash. Pearl had no sense for it though, and would go on wild spending sprees or gambling trips which mean she had to send her scalded dog, Martin, to beg for a few more scraps for old time’s sake. On the whole, it had nothing to do with Jim, but it nagged at him. He knew that Martin would encourage his wife to ignore the budgetary limits while living with her like an overgrown parasite with just enough sense to be an annoyance. Jim wondered if maybe some of the stipend never made it to Pearl at all. He wondered if someone started turning over rocks, that they might find a little nest egg Martin had squirreled away. He had enough sense to know that Pearl would eventually cast him off.

It put him in a foul temper, but then an idea, a devilish thought, leapt into his head. “How much are you going to give him this time?”

“The usual amount, probably. He’ll be here around lunch. I need to call my mother and give her another lecture it sounds like.”

“Tell you what. Why don’t you go out around lunch. I’ll talk to Martin and tell him the usual. Keep him out of your hair.”

Daisy looked at him. Her face showed every gear in her head turning. “That’s sweet of you. Why?”

“Why not? After a wake up like that, I think my little wife deserves a treat of her own.” He tossed his phone aside and rolled on top of her. She giggled and squirmed, but her hand shot down to start stroking his cock as it sprung to life.


Jim rattled the case in his hand like a half empty box of breath mints. He’d seen them used before and it was nothing short of amazing. They were due for more extensive human testing, but the first round had come back with few long term side effects, none of which Jim thought of as damaging considering the gain. The pills would revolutionize the world. He didn’t know exactly how, but the research they represented went well beyond any tawdry use he could think of. More importantly, they represented a fortune beyond fortunes. The company would skyrocket in value once they hit the market and he would become one of the richest men in the world. Martin’s nagging for an extra grand or two would seem so petty then. The pills clicked up and down in the bottle as he waited.

The doorbell rang. He greeted Martin like an old friend with a handshake and half sincere clap on the shoulder. “Come in, come in! Daisy’s gone out to pick up some lunch. She asked that I keep you entertained until she got back. Have a seat.”

Martin settled down on the sofa. He didn’t like it. It seemed to austere and uncomfortable. He also thought it cost too much. Everything about his son-in-law cost too much. Martin was thin man, but not lean or gaunt exactly. His thinness was more of the absence of person than the lack of fat or muscle. He was man who had never fully developed, a wraith with nervous eyes and a weak smile. He winced and dabbed at his lips with a handkerchief as Jim offered him a drink. “Thank you, Jim. I was hoping to see Daisy though. I’m in a bit of a hurry.”

“Don’t worry, she’ll be back soon. I actually wanted to talk to you about something.” Jim rattled the pills in his hand and set them on the coffee table. “Take a guess how much those are worth.”

“What are they?” Martin eyed the bottle suspiciously. He didn’t like Jim. He was afraid of him.

“We’re calling it Rejuv at the moment. It’s an amazing new drug. It would take hours to explain exactly how it works, but the effect is pretty simple. Take one of those and your body changes. Best we can judge it from photos and self reporting, makes you about twenty years old again.”

Martin laughed. “You’re pulling my leg.”

“Nope.There’s a few complications we haven’t worked out yet. Memory loss. Sometimes significant. Generally the test subjects remembered who they were and who everyone else was, but kind of in the way that you remember a dream. Like you saw it happen to you but didn’t actually live it yourself. Somewhere out there is a sixty five year old woman with the body of a twenty year old. She knows that she had a life of sixty years, but can’t remember much of it. We’re not entirely sure what causes it, but the pill pretty dramatically alters the brain chemistry so it’s normal to think that a few synapses would get lost along the way.”

Martin shifted uncomfortably. He had stopped from drinking the water Jim had given him. “You can’t be serious.”

Jim pressed on. “One other big side effect that we haven’t been able to rule out yet. Well, Martin do you know how the different genders develop?”

“Something about chromosomes?”

“Right. At a rudimentary level, the generic human is female, but our chromosomes tell which parts to develop and how. Rejuv toys with that, not intentionally. The drug works by kick starting your body’s development all over again, but we haven’t figured out how to make sure it uses the right set of blueprints. So also out there in the world is a fifty seven year old man with the body of a twenty year old girl.”

“My god, that’s monstrous,” Martin dabbed his lips again. He could feel his heart quickening. He didn’t like that Jim was telling him any of this.

“What? No. It’s a miracle. And a choice. Forty percent of males who take Rejuv go through the gender change. That’s a better than half chance that you take a pill and wind up thirty years younger. Don’t you like those odds? You’re a gambling man, right?” Jim lingered on the word. It was a guess, but a good one. He watched as Martin fidgeted in his seat. The missing money, Pearl and Martin’s affinity for casinos, and their way of always sounding on the brink of an argument pointed to some problem. It wasn’t necessarily a gambling addiction. He was wiping his lips and looking at the wet bar instead of the glass in his hand. Maybe Martin was a functional alcoholic. Maybe it was drugs or something worse, but the problem was there. And on the table was a solution. Jim snatched the bottle, twisted off the top, and poured a single yellow pill onto the table top.

“Why would you offer me something like that?”

Jim did not hesitate with a response. “Because you are a vestigial relationship. You’ll be cut away eventually. Think of it as a severance package. Your choice of course. Daisy and I already discussed the extra money. You can tuck your tail under your legs and scurry back to a wife that loathes you to bide your time until you’re thrown away. Or you can take the pill and see what happens.”

Martin did not need Jim to tug at the frayed threads of his life. Do it quick, before you think. It could be a cruel joke. A needless jab from a sadistic man. But you’ve taken your hits before, Martin. You’ve taken hits with the best of them. Rope ‘em in. Let them think they’ve won. Feather your nest under their nose. A kicked dog can live a comfortable life. But there are the kicks. Do it quick. It’ll sting less. With a wry smile, he picked up the pill. Jim’s eyes widened in fascination and delight. Martin dropped the pill on his tongue and shot it down his throat with a swig from the glass.


He didn’t think the old fool would take it. Jim’s face was mix of horror and fascination. He’d seen the videos of the test subjects, but he’d never been present before. His desire to humiliate his wife’s step-father was put aside as his scientific curiosity took hold of him. His mind raced through all the reports and pangs of worry intruded into this thoughts. The testing had been done under extremely controlled scenarios. A full medical staff presided over each administration of Rejuv. Waivers upon waivers had been signed by carefully selected and screened candidates, some of whom took the drug as an absolute last resort. Yet here, he’d allowed his father-in-law to swallow down a magic pill that could explode his heart for all Jim knew. Still, fascination rooted him to the spot. He wanted to see what would happen and he wondered fiercely what made Martin feel cornered enough to take it in the first place.

Martin looked back at the other man with a fierce resolve. Never in his life had he felt more sure of himself. He’d called his son-in-law’s bluff and nothing would come of — his gut twisted. It was unlike anything he’d ever felt before in his life. Rumbles in the stomach, muscle spasms, unknown twinges from unknown sources, all of those were foreign to this. He felt as though his innards had been shocked with the gift of touch. It didn’t hurt, but it didn’t feel good either. Next he felt a flush of heat that started in his gut and spread out rapidly over his body like molten needles plunging in and out of ever inch of his skin. He leapt up from his seat and started tearing off his clothes.

Martin’s skin rippled and shifted. The man’s tangled unkempt hair fell out entirely. The wiry chest hair that he’d managed to muster at his age fell away as well. Muscle withered and tissue bubbled as cells rapidly changed. Jim watched enthralled. Nothing out of the ordinary had happened yet. Martin made a few groans, but he didn’t seem to be in any pain. Jim watched the other man’s chest carefully. The skin had cleared and tightened, loosing the almost indiscernible signs of age. Martin’s body took on a healthier color than the pallid gray Jim had always known. The paunch belly evaporated as Jim heard the crunch of bone. Not part of the sixty percent. Sorry Martin. Martin’s face was screwed up in concentration as bones started to reshape, hips flaring out and fatty tissue multiplying quickly to fill out the new form. His nipples puffed up, swollen and red as tissue grew behind them.

Something isn’t right. What was I doing here? Why is that man watching me? I like it. Thoughts raced through Martin’s head as every one of his senses was bombarded by a wave of changes. Feminine hands ran up his body to squeeze his growing breasts. It felt nice. He had a distant memory of feeling breasts before, but they didn’t belong to him. I’d like to play with someone else’s titties, but what I really want is a cock. Martin eyed Jim hungrily and made note of the swelling bulge in the other man’s pants. Whoever he is, I hope he’s at least as horny as me.

Jim didn’t know when it happened, but Martin was almost entirely gone. All that remained was the rapidly shrinking phallus between the new woman’s legs. He’d thought of it clinically at first, the testicles retracting into the body as the scrotum pulled tight and the penis shrank into a tiny bundle of nerves. But as Martin’s new pussy split open, Jim could no longer see his former father-in-law, but the short haired, big breasted woman Martin had become. Even the facial structure had changed. Maybe Martin looked similar to a distant cousin of his, but no one would know that whatever was left of Martin was stuck in this blonde girl’s head.

“What the fuck!” a voice cried from behind Jim. The door clicked shut. Daisy scowled at Jim, but her eyes quickly moved on to naked woman standing in their living room. She noted the discarded and somewhat ripped clothes and the unsightly tufts of grey hair on their carpet. She shivered. “Jim, you didn’t.”

Jim stood up stammering. “I didn’t think he’d actually take it.”

Daisy stood with her arms crossed staring fiercely at her husband and the dazed girl behind him. “Well. What’s done is done. We’d been looking for a third for a while anyway.” She sauntered past him, relishing the surprised look on his face. “Hi sweetie, what’s your name?”

Martin inhaled the scent of the other woman. She was familiar, but she couldn’t place her exactly. “Marti, I think.”

“Marti, what do you want to do right now?”

Marti considered the question. She was naked and had an itch deep inside her that she didn’t particularly understand. Daisy stepped closer and her palm pushed against the new pussy causing Marti to shudder. Her mind caught up rapidly, “I want to fuck!”

Daisy grinned. She looked over her shoulder at Jim, “I see that the heightened libido hasn’t been worked out yet. She’s already about to leak. We better take care of dear old step-dad then.” She took Marti by the hand and led her towards the bedroom. “Come on then. She’ll go wild without a cock in her.”

Jim followed after them. Watching Marti’s lush ass sway back and forth as it trailed behind his wife’s prim figure. They’d never been shy about their discussion of bringing a third into their bedroom, but the transformed version of her father-in-law seemed extreme. Jim’s hesitations vanished as Marti started to strip Daisy’s clothes away. Daisy smiled deviously at her husband as she pulled at Marti’s nipples, eliciting moans from the new woman. Jim followed their lead, stripping himself and trying not to think too much about the urgent throbbing in his cock. He’d already cum twice since he’d woken up, but he could feel his balls growing heavy with a massive load for whichever girl happened to be on his cock at the moment. As he tossed aside his clothes, he noticed Marti’s eyes on his body. They were wide and transfixed on the cock sticking out in front of him. Her mouth lolled open and she seemed to drool at the sight of his dick.

“Marti, do you know how to eat pussy?” Daisy asked. “If you can be a good girl and eat my pussy, I’ll let Jim fuck you.”

Vague memories stirred in Marti’s head. She saw herself as a man. Older, but it was definitely her. She was lowering her mouth between the legs of an older woman who resembled Daisy. “Yes! I know that!” Daisy crawled onto the bed and propped herself up before spreading her legs wide. Jim smiled at the sight of his wife’s bald pussy already glistening with arousal. Marti hurried up on the bed after her. She reigned in her enthusiasm at the last minute and lowered her mouth slowly to the fresh pussy in front of her. Her tongue extended and slowly moved along the beautiful lips. Daisy sighed. She looked over the arched back and round ass of her former step-father to see her husband pitifully stroking himself while waiting to be invited onto the bed. She let him wait. Marti remembered more of the goal of her current task. She flattened her tongue and started to repeat the same long, slow strokes over and over again, changing suddenly to flicking her tongue over Daisy’s clit. Marti was pleased to feel the woman’s legs shiver with pleasure around her.

“Would you like that cock in you now, Marti?” Daisy asked softly. Marti looked up at her. The woman was absolutely stunning, a wonderful mistress to give her such a treat. Marti nodded. “Come fuck her.”

Jim needed no other encouragement. He crawled onto the bed and positioned himself behind Marti’s upturned ass. His cock prodded eagerly against the warm folds of Marti’s brand new pussy. He angled himself and pushed forward. Both of them moaned as he slipped into the tight pussy. Out of jealousy or her own excitement, Daisy pushed Marti’s head down into her pussy with some force. Jim locked eyes with his wife as he slid inch after inch of his cock into the changed woman’s pussy. His hands rested on Marti’s ass, squeezing the soft globes with relish as he enjoyed the feeling of her pussy walls clamping around the invading cock. “Go on. Fuck her,” Daisy goaded. They shared a devilish smile and Jim started to rock his hips with increasing speed.

Marti’s body was overwhelmed with sensations. The memories of her former life grew hazier with every act of depravity between the three of them. The feeling of a thick cock sliding in and out of her was more intense than anything Martin had ever felt. With each wet slap of Jim’s thighs against her ass, she felt that some other memory fell out of her head. She’d been a man, she knew, but that man had been pathetic and weak. Maybe she still was, but at least she had a good mistress and a master with a thick cock. She thought of Pearl and finally felt better than the woman that had been Martin’s wife. She’d finally one upped her on something. Marti’s thoughts dissolved into a buzz of pleasure as she felt Jim’s cock start to twitch inside of her. She flooded with excitement, knowing he was about to cum. She pushed her ass back against him, enjoying the feeling of his hard body against her softness. She cooed in frustration as Daisy’s delightful pussy slid away from her.

Daisy moved up to her husband and kissed him deeply. With a fiendish grin, she slapped Marti’s ass hard. “Make him cum. Make him fill you up with his delicious spunk, you slut. That’s who your are Marti. You’re our personal fucktoy. A thing we can play with when one of us is busy. Now let him pump his cum into that pussy.” Jim couldn’t hold back any longer. He jerked erratically as he erupted inside of Marti. Gushes of cum rushed into her waiting snatch. She too began to spasm in pleasure, dropping fully onto the bed as her mind boiled with happiness and electric pleasure. Jim pulled back and let his cock slip out of Marti followed by a gush of cum. Marti rolled forward, exhausted. Daisy pushed Jim back and lowered her head to his cock. She licked and slurped, cleaning away the fluids left behind by the rut. Jim winced several times as his oversensitive cock felt rough under Daisy’s tongue.

“What the fuck have we done?” Jim murmured.

“We took care of our new slut, of course,” Daisy said without a beat. “You said the drug will change the world. This is where it starts. Martin was a fucking loser. Look at him now. He’d have cut his dick off himself to look half as good as that.”

“What about Pearl? What are we going to tell her?”

Daisy pulled his arm around her. They sat in silence for a while watching Marti breath slowly as she worked through indiscernible thoughts. Finally, as the prospect of explaining to Pearl what had happened to her husband hung in the air, Daisy answered, “You’ve got some more of those samples right?”