Go home for some family time

Our house was a good hour's drive away from Max and Amy's, so we decided to stick to the original plan and head off. Crucially, we'd managed to keep the secret of our special club membership. There was no need to keep the secret from James and Lucy though, as they were included in our family membership. The tricky thing was going to be how to tell them. We understood there would be a membership pack waiting for us at home, so the conversation had to start now, in the car.

It wasn't as difficult as I feared. We'd asked them what they had got up to on their day trip with Max and Amy yesterday, and when they'd finished talking about it, James piped up:

"So, what did YOU two get up to, then?" in a very cheeky, almost sarcastic tone. He knew of course that we'd been for a "romantic" weekend away and what that entailed.

"We had a great time," I answered.

"I bet you did!" he chipped in before I could say any more.

"Yes, well - we got to know some of the other guests at the hotel. The people that own the hotel run this, kind of, club. And we decided to join."

James snorted. "It's not a swingers' club, is it?" he laughed, enjoying his attempts to try and wind us up. I chuckled, but inwardly was trying to figure out how to answer. Fortunately Lucy rescued me by interrupting James's banter to admonish him.

"James, you're such a pervert!" she whinged, and in the rear-view mirror I saw her poke him in the ribs.

"Ow! Hey, I'm only making conversation!" protested James. I saw the sign for the drive-thru up ahead.

"Here we are," I said, grateful to be able to change the subject temporarily and to try and stop their fight from escalating. "What does everybody want?"

"James wants a slap!" answered Lucy.

"Ooh, yeah, bring it on, sis! Slap my butt!" joked James.

"Stop it, you two," Kirsty interjected, and told me her own take-away order. We managed to coax out what the kids wanted, and I pulled into the drive-thru.

We had all ordered something different, and I passed the food to Kirsty as it was passed through the window to me. Kirsty had serrupticiously opened her handbag and taken a small bag of pink and blue pills from it. Under the pretence of checking whose food was who's, she slipped a pill of the appropriate colour into each meal before passing it to the kids in the back of the car. She also placed a pink pill in her own food, and a blue pill in mine, looking at me with a big grin on her face.

I drove round to the car park so we could eat our food while it was hot. Our house wasn't far away now but we were all hungry and wanted to eat straight away. Thankfully the food kept the kids quiet for a little while. As I ate, I felt the familiar churning in my stomach and pressure building in my butt. Kirsty was gently massaging her boobs as they grew slowly before our eyes, filling out her already-full cleavage. But she was careful to keep facing forward so the kids couldn't see what was happening.

The sudden noise made me jump - I wasn't sure what it was at first, it was so loud. But the unmistakable odour of James's fart instantly filled the car.

"James, you're disgusting!" shouted Lucy.

"Oooh, yeah," agreed James, and let rip again. I looked in the mirror and could see a smug smile on his face.

"Ugh!" exclaimed Lucy. I looked at her in the rear-view mirror too. she was blushing slightly and shifting awkwardly in her seat. She was wearing a plain white T-shirt and there was no mistaking her little breasts were filling out, pressing uncomfortably against her restrictive bra.

I needed to fart, and sneaked it out as quietly as I could. Not quiet enough.

"Heard you, Dad!" mocked James.

"Ooh, that was filling," said Kirsty, letting go with her own fart. Looking over her shoulder, she had noticed Lucy's discomfort. "I might have to loosen some clothing! Feel free to do the same if you need to, kids."

James didn't hesitate to comply, undoing the buckle of his trousers. It wasn't his belly that was getting bigger and causing him discomfort though - but he tried to hide his growing erection by resting his hands in his lap.

Lucy leaned forward, reached behind her back and undid her bra strap, sighing quietly at the relief but looking worriedly at her swelling breasts. They had now caught James's attention and he couldn't keep his eyes off them - neither could he keep his hands off his cock - but he continued to try to hide it, saying nothing in the hope we wouldn't notice.

I grinned to myself, allowing myself a quick rub the massive, hard dick in my own trousers before starting the engine and heading for home. I couldn't wait to get there and see what happened next.

Kirsty's tits were huge by now and Lucy's were still growing. James watched, transfixed, and Lucy noticed his gaze was on her.

"What are you looking at, pervert?" she asked, sharply.

"Those," answered James, calmly, still not taking his eyes off his sister's rack.

"Well, it looks like you've got problems of your own," said Lucy, nodding towards the large tent in James's underpants. But despite her best efforts to sound spiteful and stand-offish, I detected a hunger in her voice and saw her licking her lips in the rear-view mirror as she stared at her brother's bulging cock.

"So, this club," said Kirsty, interrupting the thoughts of the three of us and enabling me to concentrate properly on the road again. "It offers us lots of things. As well as owning the hotel, the club has influence in pharmaceutical companies, security firms, financial institutions, you name it. And as part of staying at the hotel, and being members of the club, we get these." She held up her little bag of pink and blue pills.

"Now, I was a little bit naughty, and slipped some into our take-aways just now," she admitted. I studied James and Lucy's faces in the mirror - they didn't really react, they were just listening intently while fixated on their changing bodies. "I think you're beginning to notice the effects."

We were home. I parked the car on our driveway.

"So," finished Kirsty, turning in her seat so our children could see her huge chest. Turning around wasn't easy. Kirsty rubbed her tits, sexily. "Let's get inside and have some fun."

I helped Lucy out of the car, and she gaped at the bulge in my trousers.

"Thank you, Daddy," she said, sexily, and walked in front of me into the house, wriggling her arse seductively as she did so. A tiny voice in the back of my head protested - this was my daughter - but that voice was easily outweighed by the overwhelming urge to get my hands on that butt and ravage my little girl's pussy.

James and Kirsty were already inside. A large box that had been left outside the front door was now on the floor in the living room, but they were ignoring that and looking at each other. James was staring at his mum's magnificent breasts, while her focus was on his bulging underpants. She smiled and lifted her top up and over her head, standing topless before us all. She farted loudly.

"Oh, yes, that feels good," she said, taking a step towards our bewildered son. Lucy was standing next to me, watching, and I allowed my hand to wander to her arse and started rubbing it, slowly. Kirsty continued, "The vibration of my fart when my pussy is all excited makes it wriggle a bit. It feels so good. Now then, son, do you like my titties? You used to suck on these when you were a little baby. But I can see you're a big boy now. Let me see your cock."

James complied, pulling off his pant and trousers, his dick standing firm and massive.

"It's... it's never been so big," he said, a nervous tremble in his voice. He managed to tear his eyes away from Kirsty and looked over to me, almost pleadingly.

"It's ok, son," I said, reassuringly, as Kirsty put an arm around the back of his head and drew him towards her massive chest. He resisted a little, but she pulled him firmly, burying his face in her boob, her nipple slipping into his mouth. With that, his resistance was gone and he started sucking her tit, while his mum stroked his eager young cock.

By now my hand was between Lucy's legs, rubbing gently away at her pussy. Her tits were still growing, and were almost the size of Kirsty's now.

"Oh... oh, Daddy" she moaned, and turned to face me. I stared as my daughter's magnificent tits stretched her T-shirt almost to breaking point. Lucy followed her mum's lead and took it off, so I could see her breasts in all their glory. Lucy then bent to take off her other clothes, and I stripped too. Moments later we stood facing each other, father and daughter, my huge erection and her beautiful tits between us. She stepped forward.

"I want it," she said, "oh, how I want it. Please, Daddy, please!"

"Come on, then," I smiled, sitting down on the sofa and holding out my arms in invitation. Lucy straddled me, my cock against her abdomen at first, her tits against my chest. She then moved upwards, allowing me to bury my face in my daughter's tits and her to position her wet pussy over my eager dick.

James looked up from Kirsty's tits and they both turned to watch us.

"Go on, Luce," James encouraged. "Ease yourself down on our dad's huge rod!" Slowly, Lucy allowed my cock to enter her cunt, but she didn't get far before I felt the resistence of her hymen against the tip of my dick.

"You can do it, Luce!" said James. Kirsty walked up next to her.

"That's it, now, darling," she said softly to Lucy, "ease yourself down. Nice and slow." And Kirsty kissed Lucy on the cheek. Lucy turned her face to her mum's, and Kirsty wasted no time in kissing her daughter again, this time on the lips. As they kissed, Lucy's mouth opened, allowing her mum's tongue to explore her mouth and flicking her own tongue inside Kirsty's. As they snogged, the hymen gave way and Lucy continued to slide down the shaft of my cock. Kirsty lifted one knee onto the sofa and leaned forwards, the four huge tits of my wife and daughter now lining up in front of me.

"Your turn, James", Kirsty said over her shoulder. "Come and give me what I need." James sidled up behind her, and I saw her eyes widen as her son's monster cock entered the vagina that he was born from just over 18 years earlier. "Oh, that's a good boy," she said. She kissed Lucy again, and then Lucy turned to me and kissed me full on the lips as she started to ride my cock, her huge tits jiggling in front of me. I gripped her arse cheeks with my hands and thrusted into her. James and Kirsty were panting and grunting in unison as they fucked.

"Uh! Uh! Uh!" panted James, "Uh, Mummy! Mmmmm!"

"Ah!" echoed Lucy as I fucked her virgin pussy. She turned her head to look towards her brother. "I always said you were a motherfucker!" she smiled.

"Uh! Well, now you're right!" replied James. "Uh, Luce, your tits look amazing bouncing around like that! Oh! Yes! Yes! Mummy, I'm going to... nnnnrrrgh!" His eyes were wide in the shock of what he was doing as my son pumped his load deep into my wife's welcoming vagina.

"Oh!" Lucy's moans were reaching a higher pitch now. "Oh Daddy yes!" She arched her back as her alredy-tight cunt tightened even more, and we came together, my dick pumping a huge load of semen into my daughter's virgin pussy.

"Ooh," she said again, bewildered by what we had just done as the pleasure continued to coarse through her body. She leaned forward and farted. The vibration shook her pussy, still gripping my twitching dick. It felt great.

"That's a good girl," said Kirsty. James slowly withdrew his dick from his mum's snatch, staring down at it in disbelief of its size, what he had just done with it, and the fact it was still erect and ready to go again. I was still inside Lucy. She farted again, and once more the vibration sent delicious shockwaves through my cock.