This story follows Jake, a man in his early twenties who describes himself as an "endonaut."  Jake was born with the ability to shrink down to microscopic size and has a habit of exploring people's bodies.  His powers prevented him from being harmed, and he had a habit of spying on people.  The favorite person to spy on was Jessica, Jake's girlfriend who also happened to be bi-sexual.  Jessica was a blue-eyed, red-head who had an incredible set of tits and a great ass.  She was also totally unaware that Jake had shrunk himself today.

Jessica sat on the toilet with her ass-hugging jean shorts below her knees.  She was on her phone, and totally oblivious to the fact that her boyfriend Jake was half an inch tall, naked and on top of the toilet behind her, spying on her.  She didn't remember why Jake was out of the house today, but she had been up front and told him that she planned on hooking up with her on-again, off-again girlfriend, Darcy.

The doorbell rang and Jessica started to get up.  "Hang on, I'll be out in a second," she shouted, and started to pull up her jean shorts.  Seeing an opportunity, Jake leapt down, hoping to catch a ride in the giantesses panties.

As he was in mid-leap, he screamed.  "No!  Oh god!"  He rapidly fell down towards the fabric of Jess's jeans.  There was only one issue:  she was not wearing any panties.  "Jess, help!" he shouted as the ass hugging shorts were zipped up.

Walking out of the bathroom, Jess was already turned on at the mere thought of sex with Darcy.  'It's been too long since we've done this,' the beautiful red-head thought to herself.  'Wait till she sees that I'm not wearing any underear.'  As she walked, she was unaware that her half inch tall boyfriend was getting wedged in between her ass cheeks.

The constant motion of Jessica walking had thrown Jake about.  His tiny, naked body was currrently propped up against Jessica's asshole.  "I've gotta find a way out of here," Jake said to himself, not wanting to get caught up with two horny giantesses.  "I just gotta make sure not to stimul....FUCK!" he shouted.  Accidentally, he had pressed his arm inside of the red-head's sphincter, and it was not letting go.

This was noticed by Jessica too.  "Mmmmpf," she said with a gasp as her eyes widened.  She liked it...a lot!  "Mmmm, fuck, my ass feels nice," she said with a slight giggle.  She closed her eyes and started to relax her muscles and just go with the feeling.

Down between her ass cheeks, Jake was still struggling, trying to free himself.  "C'mon, let go!" he muttered.  He propped his body against the hole and tried harder to pry his arm free.  All this resulted in doing was having the puckered sphincter pull his whole body inside.  "Nooooo!" he shouted, as his girlfriend's mungry asshole swallowed him like a snack.

Jess was confused by this.  The delightful feeling of something tickling her asshole was gone.  'Screw it,' she thought.  She knew what she wanted to do with Darcy now.  As she opened the door, she saw her blode friend standing there in a sexy black dress, and holding a strap on.

"Hey baby, ready for some fun?" the outgoing blonde said, walking into the apartment.

"Fuck I missed you baby," Jess responded, embracing the blonde with a hug and a long, sensual kiss.  Without saying anything, Jess then dropped her jean shorts, revealing no underwear, just a wet, clean-shaven pussy.  "No panties, just for you."  She then shook her ass at Darcy.

Darcy giggled at this.  "Oh yeah, well surprise, bitch!" she said with a laugh.  She pulled up her dress to reveal she was also not wearing any underwear.  Slapping her own ass, Darcy smiled.  "Like what you see?

"Alright, I can't take this," JEss said, grabbing Darcy's arm.  "Let's go."  She saw Darcy grab the strap on as the two ran to the bedroom.  "Fuck, I'm excited for this," Jess said, climbing onto the bed.  She grabbed her ass again, while Jake screamed for help from the inside.

Inside of Jess's ass, Jake was trying to plan out his next move.  "Well shit," he shouted.  "I guess I'm going up to her stomach.  Maybe she can burp me out."  As the tiny guy started to climb through his girlfriend's intestines, he heard a very peculiar sound, and it was getting closer.  It took Jake a second of squinting and processing to realize what was happening.  "Holy shit!  Is that Darcy's tongue?!" he screamed rhetorically.

Indeed, the massive pink serpant was Darcy's tongue.  The blonde had her face buried between Jess's ass cheeks and was plowing her tonuge deep into her hole.  "OH YEAH BABY, RIGHT THERE!" Jess screamed as her friend continued to eat out her booty.  On her knees with her head buried in a pillow, Jessica furiously masturbated while her friend continued to pleasure her.  She was in absolute ecstasy right now.

Inside her ass, Jake was not as safe.  "Ahhhh!  Help me!" he shouted, as the wet tongue kept getting closer and closer.  "No Darcy!  Don't eat me!" he crawled through the intestine as quickly as he could without Darcy's hungry tongue gaining on him.

Jessica then shouted something that startled both Jake and Darcy.  "BABY I'M CUMMING!" 

Eyes widened, Darcy was unprepared as her face began to get covered in her lover's fluids.  She coughed and started to ertract her tongue from Jess's rectum, just missing grabbing Jake on its' way out.  "Ugh," the blonde said, pulling her face free.  "Damn babe, your ass is strong," she laughed, her face covered in Jessica's juices.

Jessica blushed.  "Sorry baby," she said in a teasing manor.  When there was no response, she turned and smiled.  Darcy was reaching down for her big, black strap on.  "Well goddess," Jess said, placing her face back down on the bed and sticking her ass high into the air.  Her asshole began to open up.  "My butthole is ready to get fucked."

Inside her rectum, Jake thought this may be his chance.  He had managed not to get eaten and the hole had just opened.  "Finally, I'm out of here," he mumbled.  As he approached the exit of this wretched tunnel, his jaw dropped.  "Oh fuck."

Standing before him, was the towering, naked form of the giantess that was Darcy, and she was wearing a strap on.

Inside of his beloved girlfriend's rectum, Jake was in a dead sprint, trying to find safety further inside of Jessica's intestines.  He was being pursued by a large, black strap-on, which was constantly threatening to pulverize his tiny body.  The tiny, naked guy knew there was no chance he was escaping out from Jess's asshole, and he would have to go the long way.  Jake could only scream in terror as the massive strap-on grew nearer, closing in on his tiny body.

On the outside, Jess was moaning like crazy.  She absolutely loved the feeling of getting fucked up her asshole, and it had been a while since her and Jake had done anything like this.  "Oh fuck, that feels amazing," Jess moaned, as Darcy continued to pounder her asshole.  The red-head could hear her friend moaning as well, and it only turned her on more.

After several minutes, Jake had found safety....sort of.  He was now well into JEssica's small intestine, and he felt he was out of reach from the giant, pseudo-cock that Darcy had been using to plow Jessica's butthole.

"Okay, here we go," Jake whispered to himself.  He had reached a point inside Jessica's small intestine that would require him to swim from here.  He squeezed his miniaturized body through, and was now butterfly-stroking his way through his girlfriend.

This went pretty much unnoticed by Jessica.  The giantess was far too caught up in her sexual acts with Darcy to pay any attention.  "Fuck yeah, baby!  Make me cum like a little bitch," Jessica moaned, gently biting her pillow.

At that moment, the naked blonde giantess pulled her hips back, removing the strap-on from Jessica's asshole.  "Not yet," she said, kissing Jess on the neck.  "I want to do something else."

With her butt still high in the air, Jess turned to face her lover.  "Fiiiinneeee," she said.  She knew what Darcy wanted.  Jess rolled to her back and spread her leg apart.

Inside of Jessica's guts, her boyfriend was still swimming through her small intesting.  'Thank god I was a swimmer in college,' Jake thought to himself.  He had been able to hold his breath for a long time, and that skill was very useful now.  Jake had no idea what Jess and Darcy were about to do.

Darcy sat up onto her knees, lustfully staring at Jess's pussy as the red-head's legs were spread.  "Ready to get fucked, baby?" she said, biting her lip.

Jess could only moan.  "Fuck me hard, like the slut that I am," Jessica responded.  She was so excited to have this devious sex with her "girlfriend."

Meanwhile, inside the abdomen of JEssica, Jake had finally reached where he wanted to end up.  Traveling through both the samll and large intestine, Jake had passed through a sphincter into Jess's stomach.  It was a churning cauldron full of wretched smelling green liquid.  This would have digested almost anything, but not Jake due to his enhanced durability when shrunken.  Jake could hear Jess moaning like crazy, and just rolled his eyes.  "Jess, you're a fucking nympho," he shouted knowing she could not hear him.  Though he knew he would not be digested, Jake still found the stomach acid disgusting.  Pulling himself onto a potato chip, Jake tried to wait it out inside the stomach of his girlfriend.  

On the outside, Jess and Darcy were continuing to fuck each other.  The twowere in missionary position, with Darcy on top using the strap-on to plow into her girlfriend.  "Ohhh yeah," she moaned as she kept thrusting into Jessica's dripping, wet pussy.

Feeling the strap-on fill her up, Jessica was in heaven.  "I'm so close, baby," she said, as she thrust her hips upward, matching Darcy's rhythm.

"Jess, I'm gonna cum," moaned Darcy as she reached down and grabbed the breasts of Jessica.  Her strokes increased in speed, as she felt her body losing control.

"That's right Darcy, let's cum together.  Make me cummmm," Jess said.  The red-head partially sat up so she could suck on Darcy's tits.

In Jess's stomach, the gross, green fluid started to get violent.  For Jake, balancing his tiny body on a chip, it was like some crazy storm at open water in the ocean.  He felt waves rocking his make-shift raft and making it shift back and forth.  "Okay, here we go," Jake shouted in excitement.  He was expecting Jess to burp him to safety and out of her churning stomach any minute now.  Hedging his bets on getting out of here, Jake decided to shrink himself even further.  He was hoping that making himself only a quarter inch tall, would make him lighter and easier to burp out.

Then it happened.  The gasses inside of Jessica's belly were not mixing well with her stomach acid.  The stomach lurched, and Jake found himself being rocketed up Jessica's throat.  "What the fuck!?" he shouted as he was expelled out of Jessica's mouth. 

When Jess released her burp, she had just orgasmed at the same time.  She was staring directly at her blonde lover.  "Damn Jess, that was amazing," panted Darcy, as the two naked women embraced each other.

"You were great, baby," Jessica responded, gently caressing DArcy's left breast.

"Did you burp when you were cumming?" Darcy teased.

An embarrassed look crept across Jessica's face.  "Mayyyyybe," she giggled.  "Don't know why though."

Seeing her partner was slightly embarrassed about it, Darcy decided to just play it off like nothing.  "Well," she said, leaning down and kissing Jessica on the stomach.  "I guess your tummy was enjoying it as much as we were.

The two women laughed together.  What neither of them realized was that the quarter inch Jake had been launched out of Jessica's mouth, and directly into the open jaws of Darcy.  "Dammit, not another mouth," he whined, laying sprawled out on her tongue, covered in her saliva.

Darcy sat up and got off the bed, handing the strap-on to Jessica.  "One sec babe, I'm gonna get some water.  After that I want you to fuck me hard."  Jessica was still basking in her afterglow and didn't say anything.  She just smiled, bit her lip and nodded.

Inside of Darcy's mouth, Jake was planning his escape.  He was approaching the wall of her teeth and planning to make a leap of faith as soon as she opened her mouth.  "Okay, here we go," he said, trying to hype himself up.  He started to run but stopped dead in his tracks.  "Wait, what?!" he shouted.

A massive wave of cold water, entered the mouth of the blonde giantess.  Jake screamed as he felt himself being washed towards the back of the dark cave, back towards the tunnel that was Darcy's throat....