Kattie after having sex with her brother twice was felling 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 noticed that both of Jake's nipples were puffy and erect. On instinct she leaned toward one and put it into her mouth and started to suck on it. At first her efforts were unrewarded but after a moment she felt a trickle of fluid flow into her mouth. This proved that Jake was in fact 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". "Kattie do you see that trophy on the nightstand" said Ruby into Kattie's mind. "Yeah" thought Kattie as she turned toward it. "Grab it and put it on you brother's belly" continued Ruby's instructions. Kattie with the hand not being held by her brother grabbed the trophy and put it on Jake's belly. Then both Jake and Kattie witnessed the trophy change shape. It became a sphere with one end that was pointed and the other end that had a flat handle. "This butt plug should stop the spilling of you baby batter out of his ass" said Ruby. Quickly Kattie freed her long cock from Jake's tight insides and replaced it with the plug. Jake gave a little yelp as it entered but felt no pain after it was in. Without Kattie's cock in him the bulge in his stomach was not as prominent but still noticeable.
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 the bulge in his stomach was still noticeable with his shirt on. Jake ended up having to wear a previously oversized pair of sweatpants and a baggy 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 come 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 the flooded her mouth as her tongue came into contact with the wet head 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. Kattie swiftly got off the bed and got behind were the door would open. She did not have to wait long before her father opened the door and walked toward the bed. Had it been lighter and he had seen his wife's melon sized belly he would have ran to her to see what had happened but it wasn't until he turned on the lap that he saw what had happened. He gasped and went to her asking what had happened Megan only mumbled "so good" while looking a the ceiling. Kattie then walked towards her father. Noticing the movement he spun towards her but before he could say anything she touched his arm and he froze. "Daddy would you like to help me feel good like mommy did" said Kattie.
By the morning Kattie had done to her father what she had done to Jake and she had a now 20 inch cock and tennis ball sized testicals to prove it. "Well done Kattie your growing your family. I hope they all have healthy pregnancies" said Ruby.