Josh woke up early the next morning

As the morning sun rose we come back to our two favorite siblings as Josh was sleeping atop her younger sister's sleeping form, calming and comforting him with her natural warmth. Her previously large belly now once again gone, returning to it's original larger-then-fist sized six pack surrounded by other, equally large and impressive muscles.

Josh fluttered his eyes open as he yawned. He never had a good sleep like that in ages, he felt refreshed. He looked around to see that he was still in between his sister's breasts and she was still sleeping. He gave a simple smile as he gently tried to wiggle his way out of his flesh prison. He wiggled his right arm, slowly getting it out bit by bit. This elicited a moan from Liz which sent a shiver down Josh's spine and blood to rush to his lower region, no doubt she's getting pleasure from this even though she's still sleeping. Finally he got his arm out with a fleshy 'plop' which made her boobs jiggle. "*Gasp* ooooohhhhhh." Liz groaned. Josh look up at her nipples to see they were extending. The thick rods slowly started to rise higher and higher, making a fleshy stretching sound.

He gulped now having a full on hard-on, his own little dick now rubbing against the internal walls of her breast flesh. Liz moaned louder and Josh too although a bit quietly. He has to get out quick before he accidentally makes both of them erupt, especially Liz. Last thing he needs is to explain to his mom why the house is flooded and smells like sex. Slowly he wiggled his other arm out of it's confines failing to prevent Liz from moaning again, her nipples now at full mast and her breasts now gurgling. Luckily her nipples have been plugged with the corks, he just hopes it stays that way. Unknown to Josh however, since his view is blocked by the breasts, her man-rod was also starting to harden, slowly rising higher and higher while occasionally throbbing.

Now, to get himself out, he may have an idea. Placing both hands on the top of each of her breast, in which they sank in deeply due to how soft and squishy it is, he turned his body side to side as he slowly pushed himself out. Fortunately this worked, unfortunately this made his penis rub against her flesh even more and made her moan even louder with Josh biting back against his. Pre was forming at the tip of his penis as it formed a dark spot on his pants which was also rubbing against her breast which made Josh groan.

This evolved Liz's normal moaning and groaning to a low, throaty growl, her hands now clawing at the floorboards with her stiletto like nails. Her nails combined with the power of her mighty muscles, made DEEP claw marks in the floorboard like some beast from fiction. Josh gulped, happy that the floor was not him but it didn't stop there. Liz's body was become hotter (temperature wise) and sweat was also starting to form on her dark body, the rate at which it is being produced steadily increasing and each, individual droplet become larger and flowing faster. Her body was also starting to convulse. Muscles spasming and flexing, unintentionally making them pumped larger, her head shaking from left to right on the couch and her wavy, brown hair spread out all over the floor with a small puddle of sweat forming around her. Her nipples, previously erect, were now engorged with blood and her breast now gurgling more loudly. Her thick penis, now at full mast, is bumping against the ceiling from the throbbing.

Josh was trying to hold on but with Liz's erratic movements combined with her sweat he was having a harder time getting a grip. "Gha- GYAAAAAAAAA!" Liz shouted as she all of a sudden arced, plowing her dick straight through the roof, Josh lost his grip as he fell out of his sister's breasts with a wet *schloop* before falling on her face and then to the side of her, This woke her up as she suddenly opened her eyes to look at her very sexually aroused self, dark tanned body sweating so much it looks like she recently had a bath, an increasingly large puddle forming underneath her, a body so hot it (combined with her sweat) that it was actually increasing the heat and humidity in the room which in turn made her sweat even more. A monumental dick, that's currently plugged into the roof, that she could barely see over her larger-then-beach ball sized breasts. Her body spasming uncontrollably, involuntarily flexing all of her muscles larger with angry larger-then-pencil sized veins forming all over her and even larger veins appearing on her dick. And lastly she was also starting to get a strong smell that's getting stronger by the second, laying heavy in the air. It was the strong smelling musk that was being emitted by the combined power of her vagina and penis that when combined with her sweat, amplified the smell even further. It was strong that it saturated the air, forming a faint looking mist and made her mind heavy and weary to thoughts.

Liz gritted and grinded her teeth so hard that it can be heard and from the friction it's causing, it's producing heat on them. Drool coming down from her mouth she dug her long-nailed hands deep into the floorboards, damaging and breaking into them, hitting the hard cement like surface underneath them. She cannot stop this, her mind was too lust ridden and her body beyond her control, she needs satisfaction NOW! She desperately looked around to find anything to satisfy her until her eyes landed on Josh, who was just recovering and trying to stay on his feet.

"JOSH!" He jumped and spin around in fear only to come face to face with Liz. Josh froze in place, Liz's face was contorted into an angry, snarling version of her normal cute self, drool coming down from the sides of the face and teeth grinding so hard he can hear it despite all the other gurgling and groaning noises her body is producing, her eyes hazy with a gaze that can pierce souls. "JoSh, GeT dOwN tHeRe AnD fUcK mE NOW!" Liz growled, she was in no position to form a coherent sentence, she wants satisfaction and she's going to get it. Josh tried to get his head together but it was not easy because previously of her even sexier body, her angry looking face and now that strange, strong smell that was hanging heavy in the air and messing with his thoughts"Fu-fuck you? L-Liz I know we sort of di-did this before but don't you think we ar-" Before he could finish Liz let out a loud, blood curdling scream as she grabbed a handful of floorboards on her right, exposing the foundation beneath it, raised them into the air and crushed them into tiny splinters. That instantly shut up Josh as he slowly walked to where her gushing lady bits were located.

Since her back was arced high enough (despite her massive size) Josh thought he could make his way through them. Slowly he walked underneath her. It was like a different world under here. Her thick droplets of sweat raining down on him, thoroughly soaking him and his PJ's, making it transparent and cling to his body where it showed a painfully erect penis through it. The droplets fell onto the puddle covered floor he stood on, the muscles of his sister's back that was above him looked like a living piece of artwork, wriggling, contorting, flexing and relaxing, ever moving, never stopping. The droplets of sweat making their way around them, falling down to splatter on the floor or slowly crawling down her thick, muscular arms that could easily be mistaken for a thick, tree trunk if they weren't continuously flexing along with their thick veins. Her body all around, shaking and quaking, gurgling and groaning simply added life to this small world underneath her. And the smell, the smell that she emitted, thick, strong and heavy in the air that he could physically feel it weighing him down and yet at the same time, relaxing him, calming him, filling him with energy, the air was saturated with it and a thin mist was already formed from it, both from how concentrated it is and how strong it is. Liz is her own living ecosystem, he wanted to submit himself to it, let it envelop him, let it consume him, but his mind was just cleared enough to know that he has an important task at hand.

But how can he leave without admiring the greatest artwork of them all, Liz's massive bubble butt. There it was in front of him, just above his head, he reached forward, eyes glazed and laid his hands on the massive globes. His hands sunk in and disappeared into the butt-flesh, completely enveloping it up to his wrist as he lost sight of his hands. The feeling is otherworldly, warm, soft, squishy flesh all around that was smooth, slippery and wet from the sweat. He groped, kneaded, and played around with the globes and from all the moaning Liz was giving, she was thoroughly enjoying it. He brought his face close and stuck it in there sinking in deep and motorboating her butt-cleavage, jiggling it around. Liz moaned even louder as her quaking intensified, now shaking the house along with her and a few thing breaking and shattering in the background. Her sweat going from droplets to now forming small streams that were making waterfalls or sweatfalls all over her body. The 'puddle' below now expanded so much the entire ground floor is covered and now the depth is steadily rising and not only that-

*Pop pop GUSH!*

The corks finally popped off her nipples and milk gushed forward in a powerful stream like broken fire hydrant. It completely covered and soaked through the ceiling and completely covered her and her penis in thick, milky goodness to which she happyly lapped up. Her thick, gushing milk combined with her sweatfalls increased the rate at which the pool on the ground floor was increasing in depth and not only that, her nipples were flailing around wildly, covering or breaking literally everything else in milk as she unintentionally repainted the entire room and floor in a thick coat of white milk.