Biology Lab Project - Full - Uncensored Original

Part 1 

Henry and Addie were assigned as lab partners in their senior biology class. For their final project, they had to create a presentation on the human colon. Both were desperate for a passing grade in the class, so Henry suggested taking a "hands on" approach to impress their teacher. Addie reluctantly agreed. After school, Henry went over to Addie's house where they could have some privacy. Using a shrinking device that Henry had grabbed from the science lab, Addie shrunk Henry down to a mere millimeter in height. Blushing, Addie took off her pants, and pulled her panties aside, revealing her now titanic asshole to Henry. Addie carefully placed Henry, now just a mere speck, on the rim of her anus. Stunned by the gargantuan cavern in front of him, Henry nervously held up his camcorder to begin recording for their presentation. Blushing bright red, Addie sat perfectly still as she felt her tiny lab partner venture deeper into her anus. Feeling her stomach bubbling from lunch, she was careful not to let the slightest fart slip, knowing it would mean the end for Henry... 

Part 2 

After a few minutes of silence, Addie's phone went off. It was a reminder for her after school swim practice. Although she didn't want to take her attention away from Henry, now deep inside her colon, she didn't have time to wait for him to come back out. Addie slipped into her swimsuit, sealing Henry inside, and headed off to the pool. Embarrassed by the whole situation, Addie tried not to think about the speck-sized classmate she'd just trapped in her ass. Meanwhile, Henry progressed deeper and deeper into Addie's colossal bowels, recording his surroundings for their lab project. Henry's amazement with the giant digestive system around him didn't last long, though. As Addie went about her swim meet, her booming steps and dives into the pool sent Henry's minuscule body tumbling around inside her. The motion eventually sent Henry waist-deep into a half-digested piece of waste material. Unable to free himself from the poop, Henry called out to Addie for help, but his tiny voice was far too faint to be heard over the gurgling of her guts. It slowly dawned on Henry that he was hopelessly stuck; deep inside of his massive lab partner's large intestine. Back at home, Addie took a quick shower before lying down to finally let Henry out. Much to her dismay, Addie couldn't feel Henry at all. Beginning to panic, she desperately looked around her room, thinking about what to do. Addie's eyes settled on the shrinking device she'd used on Henry earlier. Suddenly, she had an idea. Addie called her brother, Jake, into her room. Jake happened to be good friends with Henry, which Addie was hoping would convince him to help her. Jake gasped and slammed his eyes shut upon entering Addie's room only to find his sister lying fully naked on her bed. Scrambling for the door, Addie begged him to hear her out. Addie explained how Henry had been shrunken to record footage for their biology lab project, but that she'd lost him deep inside her intestines. She told Jake that she needed him to go inside her to rescue Henry and bring him back out. Realizing that Jake would never agree, she quickly pointed the shrinking device at him and pushed the button... 

Part 3 

In an instant, Jake had been reduced to a speck. He watched in fear as Addie, now absolutely titanic, climbed out of her bed and walked over to him; every footstep sending tremors through the floor. Addie bent over and plucked Jake off the ground with ease. Carefully pinched between her fingers, she brought Jake up to eye level. Not knowing how far Henry had traveled into her digestive system, Addie reluctantly decided that Jake would have the best chances of finding him if she sent him in "the other way". She shrunk down a walkie talkie and delicately gave it to Jake. Addie's overpowering voice resonated through Jake's body as she told him to simply find Henry, call her using the walkie talkie, then she'd get both of them out, one way or another. Jake wriggled against his sister's unbreakable grip as she parted her lips and rolled out her tongue. A wave of hot, damp breath washed over Jake as Addie lowered him into her mouth, blushing slightly. Remnants of her lunch still lined her shiny gullet. Jake struggled on Addie's writhing tongue as she prepared to send him plummeting down her throat. He shouted into the walkie talkie for Addie's help, desperately trying to convince her that it was a bad idea, but quickly realized the device wasn't working. His puny voice was barely audible over Addie's nervous breathing. With that, Addie apologized to Jake once more, saying that this was the only way to find Henry, before closing her mouth, tilting her head back slightly, and slowly swallowing. Jake heard a clear "gulp" and was sent quickly sliding down Addie's enormous throat. Addie placed her fingers against her neck and felt her throat contract as she gulped Jake's tiny body down. Waves of muscular contractions rushed past Jake as he heard Addie's pounding heart become louder and louder. Suddenly, Addie's narrow esophagus grew wider, and Jake dropped a short distance to land in a mushy pile of half-digested mac and cheese. Addie felt a small "plop" as her brother fell into her belly, followed by a low rumble. Addie gently rubbed her abdomen as she thought about what the two shrunken boys inside her were experiencing. At this point, the presentation she and Henry were supposed to be creating was the last thing on her mind. She knew from her science class that the shrinking device would provide Jake and Henry with a level of protection against her digestive system, but still blushed at the idea that her body was treating them as little more than particles of food. Addie felt her stomach gurgle again before letting out a petite burp. With nothing left to do but wait, Addie put on some pajamas and climbed in bed for the night. Meanwhile, Jake struggled to stay afloat as Addie's cavernous belly churned and sloshed him around. Echoing gurgles and moans filled the foul air. With no other choice, Jake tossed the walkie talkie aside and scrambled his way towards the opening to the small intestine, beginning his messy trek through Addie's guts to find Henry. He chose not to think about what would happen after that... Henry, still firmly stuck in a small piece of poop, had begun to accept his fate as he watched a solid wall of waste slowly approach. The atmosphere of Addie's bowels had steadily grown more putrid as the pressure increased. A foul wind blew past Henry as a small fart escaped from Addie's behind. 

Part 4

As Addie slept, Jake continued making his way through Addie's intestines. Every time Addie turned in her sleep, a wave of food mush sent Jake sliding deeper and deeper into her guts. Eventually, Jake arrived at a large valve at the end of the small intestine. Squeezing his tiny body through the muscular opening, Jake was greeted by Addie's large intestine with a wave of hot, smelly gas. Trying not to puke, Jake crawled his way over giant mounds of waste, calling out for Henry. After an exhausting search, Jake found himself blocked from going any farther by a large log of poop filling the entire width of Addie's rectum. However, the poop was being pushed forward, ever so slowly, by gentle contractions of the rectum walls. Although he didn't want to think about what was coming, Jake knew how this adventure would ultimately end. On the other side of the massive log of waste, Henry had found himself pinned between the poop and Addie's tightly closed anus. High pressure gas filled the limited space around him, and occasionally slipped through the slimy folds of the anus, creating quiet rumbling farts. Like Jake, Henry had a sufficient understanding of the human body to know what happens to waste. With the sun shining through her curtains, Addie groggily climbed out of her bed. She had almost forgotten about the shrunken boys inside her when an uncomfortable sensation in her bowels reminded her of their current predicament, and let her know exactly where they were. Addie checked her walkie talkie, but was surprised when it showed no new messages from Jake. Desperately trying to think of alternative options for getting Jake and Henry out of her digestive system, Addie eventually gave up and reluctantly headed into the bathroom. Addie raised the toilet seat, spread her plump cheeks, and plopped herself down onto the porcelain throne. Addie quietly apologized to Jake and Henry for having to put them through such a disgusting experience, although she wasn't sure if they could even hear her. With that, Addie groaned and began pushing... Henry felt the pressure around him increase and saw the folds of Addie's anus begin to open up, letting some light shine into the dark colon. A wave of gas escaped out of the growing opening, creating a loud *POOT* noise that reverberated inside the toilet bowl. Henry braced himself as the log of poop began sliding out of Addie's butt hole. It splashed into the water below with a small *plop*. Henry enjoyed a brief moment of fresh air before the giga-sized Addie released a second powerful gust of fart down onto him. Jake, still inside Addie's rectum, prepared to take the plunge into the waste-filled waters below. Addie felt a *gurgle* in her abdomen before pushing out a storm-force blast of fart. The force of the blast sent Jake's tiny body flying out of Addie's rectum at high speed and onto a piece of poop floating in the toilet. Blushing bright red, Addie reluctantly slid forward on the toilet seat to observe the aftermath of her morning bowel movement. She breathed a sigh of relief when she saw the two speck-sized boys climbing to the top of her dump. Jake and Henry stared up at Addie's gargantuan bare ass above them with a mix of amazement and disgust. Addie gently reached down into the toilet with a piece of toilet paper and plucked Jake and Henry from her waste. Addie flushed the toilet, and went over to the sink to clean them off. After Addie finally returned Henry and Jake to their full size, the three of them agreed to never speak about the events of the last day again. Jake was furious with Addie for sending him on the unwilling trip through her body, but decided he'd rather just move on and forget that it all happened. Addie realized that Henry's camcorder must have been lost inside her poop, so they were empty-handed on footage for their lab project. Needless to say, the lab partners received a zero.

The End.