Jen and Claire wanted to know what kind of transformation would happen to their parents if they ingested one more pill, so Jen asked Lucy to position herself so that she could lick the pussyface that was her father. She took this chance to spit a pill directly into that pussy.
It didn't take long for the change to happen, and it was one that took on greater proportions than they could have expected. At first their parents' joint body melted completely, but soon afterwards they were totally absorbed by the floor and walls of the house until there was apparently no sign of their existence left. Then the house itself changed, soon the walls, the ceiling and the walls had become a wood, but not industrially worked as before, but a single piece of wood. Apparently their new house had been carved out of some huge tree. Looking closer, they noticed that the wood was not entirely normal either, as there were some raised parts that were softer and to the touch they resembled veins. They explored the house in hopes of finding any traces of their parents and when they saw the stairs that led a giant pussy on the ceiling.
They asked Lucy to go upstairs, and she did. When they got there she continued climbing, making them pass inside the giant pussy and arriving at what should be their new room. As they passed the giant pussy, which was now on the floor of their bedroom, they could hear a moan coming from outside the house, so they asked and were guided to the window where they saw a city totally different from the one they knew.
Judging by their current size, proportion to the things in the house they deduced that they were looking at everything from approximately 150 feet high, which allowed them to see that the buildings had more spaces in between, which made the city bigger, and there were several rivers that did not exist before. These new rivers were completely white, which when they paid attention they realized that water was not flowing through them, but rather absurd amounts of cum. They decided to leave the house to see her outside, hearing another moan as she passed the giant pussy when she came down and then, when she discovered that the exit of the house was another giant pussy that was on the wall.
When they left Jen and Claire looked at their 'house' and finally saw the real consequences of their parents' transformation. The house they had just left was a gigantic tree trunk, who had a huge pussy as its entrance, perfectly rooted in the ground and towering 200 feet. In addition, the torso was directly attached to a gigantic ballsack, which contained a total of 8 testicles that were at least 250 feet in diameter each, positioned so that they make a complete turn over the trunk. Even so, they were still surprised to see 4 gigantic cocks farther up, each one thick as a building and being at least 1000 feet long. At the end of each of the cocks was a gigantic human head, two that the sisters recognized as those of their mothers before they underwent their first transformations, and the others of women they believed to be female versions of their fathers.
"Jen, Claire and Lucy, good morning. You are....?" the giant dick that was Jen's mother said but was interrupted, and cum began spurting out of the mouths of the four titanic members in a sudden orgasm, flying all over town and trickling down to feed the rivers of cum that ran through the town.