Excited at the idea of controlling when and how many pills they would spit, Jen and Claire spit out a second pair of pills, giving all four pills they had in hand to their parents, mixing it in their food.
The first to swallow the pill and start to transform was Claire's 'mother', who had a relatively simple transformation. She shrank from 60 feet tall to 20 feet, while inversely proportional to it her neck, the dragon woman grew longer.
Then it was Jen's human-headed horse mother's turn to swallow her pill. She immediately stopped eating and stood behind Claire's dragon 'mother', where she leaned her head against her ass and pushed, entering her asshole. Soon the entire bottom half of the Draconian woman was absorbed into the horse's body, with the exception of the tail that slipped behind her until it stopped on top of the butt, replacing the horse tail. After it a new neck appeared between the shoulders of Claire's 'mother' accompanied by a new head, which was a draconian version of Jen's mother's head, making them a herm two-headed anthro dragon centaur.
The third to swallow her pill was Claire's scorpiontaur 'father', who immediately climbed onto the horse body of those already transformed and had almost all of her body absorbed, except for her scorpion tail, which merged with the dragon's tail that changed more at its tip, becoming the tip of a stick, leading to the appearance of a third head between the shoulders, now a draconian version of Jen's friend's original mother. They also grew a second pair of arms and breasts.
They didn't have to wait long for Jen's cumgirl dad to ingest her pill. When the pill took effect she simply stepped under the centaur dragon that the other three had become and looked a little at the hard horse stick that was there before starting to enter her urethra, entering all the way until she reached her their balls. The joint girls saw the testicular balls expand and became much bigger with her inside, but the wrinkled shape soon disappeared and the stick thickened, with its tip becoming the female human head of Jen's father.
"Wow, that was awesome." Jen said
"And even. I didn't expect our parents to merge into one being." Claire said
"After that we cannot be left out, we must transform as well." Jen said and Claire agreed. With that they spit out two more pills each.
"Why did you spit out an extra pill? Just me, you and Lucy here, three pills would be enough." Claire said
"There is someone else here. Did you forget who was off yesterday but is back at work today?" Jen said, turned and shouted "Martha, come here."
"Yes, I had forgotten about your maid." Claire said and shortly afterwards Martha appeared in the dining room.
"How can I help you, Miss Jen?" Martha typed on a tablet and showed them the text since she couldn't speak because she didn't have a mouth. Just like the last time the conjoined girls had seen the maid she had an 8 inch dick in her mouth's place. She also had three legs of her two crotches and two asses, just as you could clearly see in her skirt two huge bulges of two 6-foot-long anaconda dicks that were stored in her personalized panties.
"I don't want you to do any work now, I just want you to join us for dinner." Jen said
"I'm sorry but I can't. As you know I cannot eat and live only on soups and smoothies that I can drink. I was about to start drinking when you called me." Martha typed
"Don't mind the smallest details. Come on, take what you would drink and do it here with us. Remember that you are like family." Jen said
"OK. I will do as you wish." Martha typed and went to the kitchen to get what she was going to drink.
"Can she drink? How can she do that without a mouth?" Claire asked
"I have no idea, it's news to me too." Jen said while Martha came back with a plate of soup in her hands
Jen took advantage of the split second that Martha took her view of her soup plate when she adjusted her chair to put a pill in the soup, she and Claire watched the maid put the end of the stick in her face in the soup, which she sucked like a straw. Then Jen swallowed one pill and placed another one in their front vagina, which would be Lucy's, while Claire swallowed hers.
The first to transform was Lucy, who had the rest of her body, which made them a girltaur, was totally absorbed leaving them with two legs again, but not for long because for a moment they lost control of their body, which moved by itself and sat on Martha's shoulders. Lucy's face that was in their crotch disappeared, only for the maid's head to be absorbed and her face to stay in the place that the dog girl was moments before, with the only difference being that instead of a vagina she had stayed the dick and balls of her face there. Martha's shoulders were also absorbed and her arms slid up the sides of Jen and Claire's body, stopping just below the girls' arms. It was at this point that the girls realized that Martha's clothes had disappeared and now she was a humantaur again, only now they had 5 legs, since in the rear were the three legs and two asses that belonged to the maid.
The transformation was not over and Jen and Claire saw a third dick head grow between the two of them, it was a dog dick with Lucy's head on the tip, but they couldn’t look much because they felt their neck shaft retract and be absorbed by their bodies, being unable to see or hear anything when their heads were absorbed. While in the dark Jen could feel that her body kept changing, but she didn't know what exactly, until she felt something tug around her head and could see again.
At this moment, realizing that the transformation was complete, Jen carefully observed how she could and saw that now only one stick with Lucy's head on the tip was between their shoulders. They had four arms and their breasts-ballsack had disappeared giving way to Lucy's eight breasts. Martha was now also merged with them and had her face in the crotch in front of them, with her body forming their new taur rear. She then realized that it was still a dick, now her head was on the tip of Martha's 6-foot anaconda dick, attached to the left rear crotch, however from what she felt the balls and the vagina behind them were also part of her. The same thing had happened to Claire as with her being on the tip of the right rear crotch dick. The last thing she noticed is that they now had two dog tails, one over each of their asses.
With the transformation completed they were hit by the side effect and were too excited, and saw that their three-headed centaur dragon parents had just eaten their dinner and were also extremely horny. They were about to join them in the moment of pleasure, but they realized that only one had control of the fused body of the four. Who has control over their body?