Kattie after having sex with her brother twice was feeling tired and fell forward onto her brother without even pulling her cock out of his ass. She felt the bulge in his belly push up into her and she found her head right on his chest eye level with his nipples. Looking at them she noticed that they were far larger then they had been earlier and looked kind of puffy and erect. Out of curiosity Kattie brought her hands up to his chest to feel them. They were softer than she had expected and began squeezing them. At first not much happened other than Jake making so involuntary sounds of pleasure but she soon felt a trickle of fluid leak onto her hands. Kattie stared at the milk leaking nipples for a second then without thinking brought her mouth onto it and began to suck. The milk that Jake was no producing was almost certainly proof that he was now pregnant and with his own little sister's child. The taste was sweet and milky and she doubled her efforts to get more of it.
Jake was feeling uncommonly calm with his sister suckling on his nipples. He felt like it was somehow right and that this was how things should be now. He then started to regret the teasing that he had done to Kattie. He now wished that he had taken better care of her. Jake vowed to himself that he would makeup for his poor treatment of his sister by taking care of her Baby that was forming inside him.
After a few minutes of drinking from her brother she was ready to get up and get dressed. She was about to get up and pull her cock out of Jake when he grabbed her hand to stop her saying "wait if you pull out you will spill and make a mess".
“He is right Kattie you should carry him to the bathroom before you pullout, and don’t worry about this weight I will help you” said Ruby into Kattie's mind. Kattie following Ruby’s direction put her arms around Jake’s back and with strength beyond her normal capacity she lifted him up while he was still on her cock.
“Kattie what are you doing put me down” squeaked Jake in a surprised voice wrapping him legs around her to not fall down
“We are going to the Bathroom to not make a mess” replied Kattie calmly as she began carrying Jake towards the door. Unsure how to respond to the whole situation Jake remained silent as his little sister continued to carry him around on her cock like he weighed nothing. The trip wasn’t long but by the time Kattie had made it to the bathroom she had gotten fully hard again inside Jake from all the movements of her walking. Lifting Jake off her cock and putting him down onto the toilet left Kattie’s cock standing erect in front of him as his bowels emptied of her excess cum. Leaning forward Jake began to clean off her cock finding its taste to be surprisingly good.
“You should repay him for giving you a drink earlier by feeding him some fresh cum” spoke Ruby to Kattie. Without further prompting Kattie guided Jake’s head to her tip and pushed in. He accepted her easily and kattie was soon close to orgasm. Kattie released inside of Jake as his belly had lost its cum bulge from early. Luckily for him this load wasn’t nearly as big and hadn’t brought the bulge back.
After cleaning up in the bathroom the two snuck back to Jake’s room where they had dropped most of their clothes. Kattie tried putting her panties back on but they could not hold her new length and newly enlarged testicals. Jake had to lend her some of his and even they were on the snug side. With the rest of her clothes on she looked like her normal self, but Jake was another matter. His hips were now too big for the pants he was wearing before and his nipples were visible through his shirt. Jake ended up having to wear baggy sweatpants that now hugged his hips and ass like a second skin and a second shirt to disguise his changes.
It was getting late into the afternoon and Kattie decided to got downstairs to see what was for dinner. Both Jake and her went down to the kitchen and found their mother Megan rolling out dough for homemade pizza. "Just in time I was about to call for you guys to see what you wanted on you pizzas" said Megan to her two children. "I will have pepperoni and olives" said Kattie "and I would like extra sausage on mine" continued Jake. "Ok now hurry on out of here and don't make a mess before I'm done baking them" said Megan as she sent them out of the kitchen. Kattie and Jake then went to the living room to watch some tv while their mother was cooking. They had only finished one episode of what they were watching when their mother called them back.
“The pizzas are almost ready but your father called saying he would be late so we will be eating before he comes home" said Megan as they entered the kitchen. They were then told to set the table for the three of them. By the time they had done this the pizzas were ready and they began to eat. "Jake you don't seem to be eating a lot are you not feeling well" said Megan to her son. "I'm ok just had a large lunch" said Jake avoiding eye contact with his mother.
After dinner Kattie went to her room and changed into pajamas and brushed her teeth. She then tried to go to bed but couldn't. She couldn't get the images of what she had done with Jake out of her head and she had gotten almost painfully erect. Normally when she had trouble sleeping she would go to her parents room and stay with them, so she thought she would do that.
Megan had just gone to bed when she heard her door open thinking it was her husband Dave she didn't look and stayed put. She then smelt something in the air and felt herself becoming very wet between the legs. She then heard "mommy I can't go to sleep my new boy's part won't get soft again". She turned to see her daughter Kattie at the foot of her bed naked and with the largest cock she had ever seen jutting up from her crotch. The sight before her made her even more arroused and she thought to her self that this must be a dream. Kattie then crawled up onto her bed and towards her mother. Megan sat up and let her daughter crawl into her lap. Kattie straddled her mother's lap facing her and pinning her cock between them.
Megan still thinking that this was a dream put her hands between her and her daughter and grabbed the cock that was pressing into the bottom of her boobs. Kattie looked at her mom's large F cup breasts rising up and down with her heavy breaths and got an urge to see them. She grabbed her mothers shirt and with surprising strength and speed ripped the top buttons away revealing a black lacy bra. Before Kattie could rip that apart her mother who had been focused on rubbing her entire length to feel just how big it was stopped her by unclasping the bra and removing it. With her mothers breasts free she was able to see them in all their glory and stick her dick between them and feel just how soft they were. When Megan looked down at her breasts she both smelt and saw her daughter's cock push up from between her tits and she felt need for it. Without thinking about it she leaned down and engulfed the head in her mouth. It was a larger than her husband's but surprisingly slender given just how long it was.
The taste of it flooded her mouth as her tongue came into contact with the wet head and made her nearly orgasm right there and then but she was able to hold on. Megan raised her hands to the sides of her breasts and began to give her daughter and titjob while she still held the head in her mouth. This continued for about a minute until Kattie grabbed the back of Megan's head and moaned "deeper" and pulled her head down her cock. Megan was surprised at how deep it was going and before she knew it her head was at Kattie's crotch. She then felt a rhythmic surging of the tool inside her and a pressure building in her gut. Megan was starting to feel light headed from the lack of oxygen when Kattie pulled out and Megan fell over onto her back.
Kattie watched her mother's cheast rise and fall and then noticed a damp space in crotch of her mother's pajamas. Kattie crawled over and pulled her pant off exposing her mother's sopping pussy. Kattie lined her self up with the newly exposed hole and before her mother could protest she plunged her self half way into her mother. Megan immediately orgasmed squirting her juices down the length of Kattie cock that wasn't inside her. Kattie continued thrusting each time getting deeper and deeper until she had 10 inches inside her mom and she felt something blocking her from going any further. This must be her womb thought Kattie as she pounded against its entrance. Feeling she was getting close to finishing Kattie pulled almost all the way out and gave one last desperate thrust and felt the entrance give and let the last 4 inches enter. With her cock now firmly in her mother's womb she could hold no longer and released a torrent of sperm inflating her mother's midsection and assuring her pregnancy.
It was then that both Kattie and Megan heard the front door closing. Kattie's dad Dave must be home and it would not take long for him to make his way into his room to check on his wife. Megan wanted to move but Kattie was tired and wouldn’t budge. Still connected by the cock lodged in her womb all Megan could do was pull the blankets over both of them and hope Dave somehow didn’t notice. When Dave did enter the bedroom he thought it a little odd that his daughter was in the bed with her mom given she was a little too old for needing to sleep with her parents, but he wasn’t suspicious of it.
Megan’s ploy might have worked had Ruby not chosen the moment when Dave went to kiss his wife on the forehead, to convert the excess semen in her body to increased boob mass. Megan let out a moan as her surging tits squeezed against her daughter under the blanket. Confused Dave swept the blanket back and was shocked by the taboo sight in front of him. What had looked innocent enough at first glanced proved to be a scene of lewd infidelity. His wife laid moaning on a huge cock that was slowly sliding out of her inch by inch as her expanding breasts pushed the small owner of that cock away. Dave could not believe his eyes as 14 inches of softening cock emerged from his wife as her breasts reached a size near J cups.
Dave after watching the scene unfold for a bit too long finally snapped out of his shock and was about to yell and scold the two on the bed when he heard a voice in his head.
“Davi, Davi, Davi, you were about to wake your poor tired daughter how could you. I’m called Ruby and I can see that you really love your family, but you have been neglectful of them recently. I want to change that but first I have to change you”.
With a sudden jolt Dave felt his whole body tingle and ripple then everything began to shift.
“Oh god what is happening to me” yelled Dave as he held his hands in front of himself and watched as they slowly began to shrink.
While Ruby had talked with Dave Megan had composed herself again and when she heard Dave yell in fear her feeling of guilt of being unfaithful to him turned to worry for his well being. She bolted out of bed new breasts bouncing and jiggling everywhere and cum dripping from her vagina, and ran next to Dave. By the time she had gotten their Dave who had originally been a fair bit taller than her was now about eye level with her and still shrinking. While he continued to shrink height wise Dave began to grow in other directions. His hips, thighs, and ass were expanding and to his shock breasts began to form on his chest.
“Oh Dave I’m sorry. I don’t what’s happening but I failed you. You must hate me” cried Megan as she held the Changing hands of David.
“No Megan I Love you, and I’m sorry for not being their for you and the kids recently can you forgive me” answered Dave who’s voice had changed from distinctly masculine to distinctly feminine voice even though it strangely remained the same deeper tone given their shrinking stature.
“Yes Dave yes” replied Megan as the two began to embrace and kiss each other.
The transformation completed during their make out and when they broke apart Megan was greeted by a strange sight. Dave the former tallest of the house was now the thiccest smallest Shortstack Megan had ever seen He was barely over 4 feet tall and had an ass and breasts that would have dwarfed both of hers had she not just gotten an upgrade to the latter.
He was still in his old cloths that no longer fit him and was struggling to get them off. Megan stepped in and helped him get his shirt exposing his bare breasts that Dave stared at in awe. Megan watched as he tentatively reached for them and began touching and exploring how they felt. Not wanting to interrupt this exploration Megan dropped to her knees and reached for his old pants to free it from his straining ass. With some effort she was able to slide them off but when they did come off they took his underwear with them and his crotch was laid bare. Megan had expected to find a cute pussy to match his small body but was shocked by the sight of a huge hog hanging between his short plump thighs. It was shorter than Kattie’s but only by a little looking to be at least 12 inches long. His balls were also big about the size of chicken eggs hanging behind the cock. It was when Megan went to feel them in their hairless sack that she stumbled upon another surprise behind them at their base was the pussy that she had expected starting to drip with sexual fluids.
The feeling of getting his pussy prodded changed his attention form his new breasts to his wife’s exploration of his crotch. The sight of his new larger cock filled him with relief that he could still be a man so to speak, even if he looked like a girl. Megan moved her focus back to his cock and began licking at the tip when Dave gave a yelp and something pushed between his legs.
Kattie had watched the whole transformation go down as Dave’s original yelling had snapped her out of her sleepy stupor. Once she saw her mother strip her father she was prompted by Ruby to join in. Kattie now stood behind Dave with her dick sticking between his thighs and rubbing up against his balls. Katie could look over Dave’s shoulder as he was only a little taller than her now and could see her mom licking Dave’s cock as her pressed up underneath. This made her seem rather small and Ruby catching onto her thoughts decide to touch up her size. As Megan began to suck on her husband’s cock and her head went closer to his crotch she was surprised to feel something touch her chin and begin to push it backwards. Removing her mouth from the cock she looked down to see what touched her and saw a second cock head. Kattie’s cock had expanded again and was now almost as long as Dave’s even from behind him probably 18 inches long.
“Kattie what are you doing? please don’t do that” spoke Dave not sure what Kattie is trying to do.
“Sorry Papa Ruby says that I need to give the whole family babies even you” answered Kattie a little apolitical as she backed up a little and readjusted her aim. Before Dave could protest Kattie pushed back and made her mark as his new pussy spread wide and accepted the massive penis. No normal body should have been able to take Kattie’s size but Ruby had completely remodeled Dave’s body and it was purpose built to milk cocks like this all day long. Dave unable to resist his bodies urges followed Kattie’s thrusts and began roughly impaling himself unto the bitchbreacker of a cock and moan the whole time. Megan wanting to get back into the action got onto her hands and knees and backed her milf ass onto to husband’s own cock. Dave tried to hold on but the combined pleasure was too great and was soon orgasaming both way covering his. Daughter’s dick in girl cum and filling his wife’s rear with semen. Kattie didn’t last that much longer either and soon her task of impregnating the whole family was complete.
Kattie couldn’t remember much after that and woke up much latter in bed with both parents around her covered in cum.