Chapter 2
John lay in a blissful post-orgasmic sleep, his big glossy dick a mess of his own cum and Kate's juice and saliva. Try as she might, Kate could find no way of reviving him. Disappointed and still horny as fuck, Kate rolled onto her back next to him rubbing her needy clit and letting the waves of pleasure float over her. She noticed the light of John's phone screen on the floor and thought that it might be fun to see if she could find some porn or maybe she could even try to film herself and post it online for everyone to see. She slid out of bed and pulled on a robe, her sweaty body was really feeling the chill of the night. The she picked up the phone and headed down to the lounge to see if she would work out how to make her movie. She got comfy on the sofa, her free hand still stimulating her slick pussy and looked down at the phone screen.
The sight of the giant dick filling the screen made her cunt twitch and she redoubled her rubbing letting out little moans as she studied it. At the top of the screen she saw some writing which she found quite hard to read. However, she recognised John's name and even in her weakened cognitive state realised that the image must be of John's cock. She balanced the phone on her leg and messed with the sliders, there was no way her other hand was leaving her pussy alone. She noticed that one made the giant dick even bigger which excited her further, sending the quiver of a mini orgasm through her. The other one didn't seem to do anything even when she nudged it up quite a lot.
Then she spotted her own name and some tits in a little inset windows at the bottom of the screen. Clicking on this swapped the image over and she giggled at the sight of her big round tits. She was reminded that she had meant to make a hot movie of herself, but was having way too much fun at the moment. She moved the main slider by her breasts up and giggled as the image expanded, then gasped knocking the phone to the floor as she realised her own tits had swelled up even more, pushing the robe open letting the cold air touch her oversensitive nipples.
Kate bounced with joy, feeling like she'd solved a hugely complex puzzle as she realised the link between the phone app and her own body. Then from there, she also worked out that she might well have done the same to her husband's cock. This all had her getting close to another orgasm, but she needed to see this to check. She stood to rush upstairs almost walking squarely into her son, Jack, who had just returned from his night out.
"Ooooh sorry Mom, I didn't realise you'd still be up," he said.
"Hi Jacky!" Kate giggled seeing his eye's fall to her semi exposed tits and her hand still wedged between her legs. Kate was so aroused by this, and impulsively wanted to take it further, thrusting her tits out a little more for him and letting the robe hang open further. However she was also very excited to see if she was right about the changes she'd made to John. "Sorry, I need to go up and have a look at daddy's cock." She blurted out before rushing out of the room and heading upstairs.
Jack was left in a daze. He couldn't quite piece everything together. Firstly, there was his mom's state of dress. He'd seen her naked, but not for a long while, and also in fairly flimsy and revealing clothes thanks to his sister's fashion advice. But there was something different about her. She had amazing tits, he'd studied them a lot and his horny teenaged brain had often incorporated them into his fantasies, but he was sure they hadn't been anywhere near this big and she didn't usually expose them like this. Then there was her behaviour, she never called him "Jacky" and she had obviously been masturbating when he came in. Maybe she was panicked by being disturbed. Then he noticed the phone lying on the floor, screen still lit up.
Kate reached the top of the stairs. A strong part of her wanted to go back down and play with Jack, but her need to see whether she had adjusted her husband's cock was even stronger. She pushed open the bedroom door and there was John, still asleep on his back as she'd left him. However, his now gargantuan dick stood proudly to attention throbbing and oozing pre-cum thanks to the "desire" boost Kate had ignorantly given him.
It was like the trunk of a small tree and Kate was delighted, throwing herself onto the bed and taking Johns massive reinvigorated member in both hands. She couldn't get one hand around the shaft and although she was reluctant to relinquish the pleasure she was giving herself, she needed both hands to fully appreciate this beauty. It was so thick, veiny and warm, gently throbbing like it was ready to go off any second. She leant in and ran her tongue from the base the full 15 or so inches to the leaking head, giggling to herself.
John was brought back to consciousness with a surge of pleasure ripping through him like nothing he'd ever experienced before. He let out a loud shout of "fuuuck," much to his wife's amusement. He opened his eyes to be greeted with the sight of his enhanced wife seductively trying to fit her mouth around the head of his gigantic penis. This only made him hornier. His desire to get off was completely overwhelming and he growled, "Yeah, suck me bitch," before reaching down and forcefully but lovingly pushing his wife's face down onto his swollen gland.
Kate had never known her husband to be quite this forward. But it was so exciting to her. She stretched her lips over his insistent cock and let him sink it in as far as possible, then matched the involuntary thrusting off his hips, working her head up and down. John was grunting and cursing loudly at every movement and Kate was delighted to be doing suck a good job. With the hand that wasn't on her head he reached down, enjoying mauling her big tits and squeezing her nipples. She had returned one of her hands to its rightful place between her legs. Neither of them was going to last long.
Jack meanwhile had picked up his father's phone from the floor and had already kind-of fathomed out what the open app was about. He still currently assumed it was some kind of fantasy or game play, although it did seem to tie in with how strange his mother had seemed. It was then that his attention was drawn by the loud grunting and giggling from upstairs. Jack had regularly enjoyed listening in on his parents having sex, they weren't exactly quiet under normal conditions. But this was again different. His dick was by now throbbing in his pants and he walked upstairs still carrying the phone.
The noise intensified as he climbed the stairs and to his surprise, he found his parents' bedroom door wide open. Although the light was low, he could clearly see his father now kneeling up on the bed over her ecstatic mother, using both hands to jerk his inhumanly huge cock in the direction of her face. His mother was frantically masturbating and sounded very close to orgasm, managing between moans and squeals to say, "you gonna shoot a nice big load in my face Daddy?"
This was the trigger and his dad shot stream after stream of hot, high pressure cum over his wife as she made herself orgasm loudly. They both took a moment to get their breath before he watched his Dad eagerly flipped his Mom onto her back, her big tits swinging as he did it. He then pushed her legs apart and eased his still fully erect monster into her.
Jack was a little concerned about his mother's safety here, but from the noises she was making and the filthy encouragement she was shouting, she was obviously having the time of her life. They rutted unceasingly in various positions for the next couple of hours. Each of them cumming endlessly and never really seeming to lose impetus.
Jack sat on the top step with a clear view into their room. He alternated the time between jerking himself off watching the real-life porno play out before him and getting his head around the app on the phone. He quickly realised the changes that had been made, although he had no idea how events had unfolded. He'd been engrossed in the multiple pages of the app and hadn't realised that things had gone a little quiet in the room.
It was only when he heard his mother say, "oh hi baby, have you been enjoying watching us fucking?" followed by a giggle that he looked up to see his naked, cum drenched mother looking down at him. "I hope you filmed some," she added, looking at the phone, "I'm sure your friends would love to see."
Jack was speechless, unsure of what to do or say or where to look. His mom's reduce intelligence meant that she completely missed this, smiled and said "look baby, I've told your dad to take care of himself for a minute while I go pee." Through the door, his dad was frantically working his still hard cock with his hands, groaning and grunting like a thing possessed. "I'm actually a little worn out right now, otherwise we could have maybe had a little fun. Maybe tomorrow? I just hope your dad slows down soon." She giggled again then pulled a cheeky, comedy sad face and headed to the bathroom.
What his mom was suggesting didn't fully sink in at that moment. However, he'd noticed that the app control he'd guessed was giving them their superhuman sexual stamina was set rather higher on his dad than his mom. Taking pity on her, he brought this down to about 200% just as his dad flooded the bed one more time with a big load of spunk. His Dad's dick quickly wilted and before his mother returned from the bathroom, he'd collapsed into a deep sleep.
Jack also pulled the same controller for his mother back down to 200%. As she passed him heading back into the room, she stopped, bent down and kissed him deeply, sliding her tongue into his mouth in a totally unmotherly way before saying "night night baby, I hope we can have some fun tomorrow. I've thought about fucking you so many times. If you'd like to come and snuggle in with us, I'm sure daddy won't mind". She giggled again before gliding back into the room and cuddling up to her husband unconcerned about the cum and juice soaked bedding.
Jack's mind was once again blown. He'd realised that somehow his mother's intelligence had been reduced significantly, which explained many of her actions. But where had this interest in him come from? He'd jerked off many times over the years at fantasies involving her, was it possible that she felt the same? Had the adjustment to her reasoning simply meant that she was expressing these desires without concern about societal conventions? He decided to let them sleep, he was excited by this idea, but also exhausted. He headed back to his room and stashed his dad's phone under his mattress, slipped out of his clothes and into bed.
Jack woke up at around 9am. He could already hear the sounds of sex drifting into his room from across the hall. He pulled on some sweatpants, grabbed the phone and crept quietly down to his parents' room. Clearly the 200% setting still kept them at a pretty intense level of arousal. The room was bathed in light, with all of the curtains drawn. His dad was pumping into his mother from behind, with her bent forward in the front window of the house, her face and big tits more-or-less pressed against the glass for any passer-by to see. As it was a Sunday, the road would have been pretty quiet. However, Jack guessed they'd probably given a couple of dog walkers a scare. He really needed a drink and headed downstairs.
