Alicia silently crept into her girlfriend’s room, holding her breath in anticipation for what was to come. She didn’t really need to be so careful since Sammy could probably sleep through a hurricane, but she still instinctively went into stealth mode; it felt more appropriate, somehow. The blonde gazed down at her lover’s adorable sleeping face, resisting the urge to coo and squish her cheeks as she mentally prepared herself for what she was about to do.

Alicia was in college, and for her thesis she’d chosen to write an in-depth paper on the inner workings of the digestive system. Purely out of scientific curiosity, of course! The digestive system was fascinating to her in a scientific way that definitely didn’t have anything to do with her daydreams about being surrounded by warm, squishy flesh or wriggling through tight tunnels. Any fantasies she may have had about cuddling against the slimy walls of Sammy’s stomach had nothing to do with what she was about to do… at least, that’s what she told herself as she stared at her girlfriend’s lips.

Alicia let out a gasp as she took in Sammy’s presence. The girl’s head absolutely towered over her, taking up most of her field of vision, and the gentle snores that were so cute at normal size shook the pillow that Alicia was standing on like earthquakes. Alicia felt her heart best faster as she slowly approached Sammy’s sleeping face, her excitement tinged with amusement as she noticed that her girlfriend’s mouth and pillow were smeared with black lipstick. As magical as the situation was, she couldn’t help but be brought back down to earth as she realized what a mess her girlfriend looked; Sammy’s look was best described as goth-adjacent, and it seemed that she’d come home from work and instantly crashed without removing her makeup, leaving smudges of lipstick and eyeliner all over her pillow and smeared across her face.

Alicia walked up to her girlfriend’s face through the puddle of rapidly cooling drool that she’d left on the pillow, giving Sammy’s chin a gentle pat. “Oh, poor baby…” she cooed affectionately, a brief pang of guilt going through her as she realized she was essentially taking advantage of her lover’s exhaustion to do this. She knew that Sammy would never let her do this normally; the high-strung goth was a bundle of nerves from overwork, and there was no way that she’d let Alicia do something like this if there was even a 1% possibility of things going wrong. Alicia hesitated for a bit, wrestling with herself over whether it was really okay to do this against Sammy’s wishes, but at that moment the goth’s lips parted and she let out a soft sigh, smacking her lips together before sealing them shut again. Alicia’s face reddened, as her guilty conscience was quickly shoved out of the way by her brain screaming at her to explore her lover’s mouth. For scientific purposes, of course.

Alicia cautiously approached Sammy’s plush lips, careful not to slip on the drool-soaked pillow. She stood before her girlfriend’s mouth, her heart nearly beating out of her chest as the warm air from Sammy’s nose tickled her skin, and fell forward, flopping face-first onto the warm, moist pillows. At Alicia’s current size the closed mouth was just about as tall as she was, her body comfortably nestling against the gap between the lips. Overwhelmed by the sensation of her lover’s soft lips against her body, Alicia pressed her face into the gap and gave the lips a long, loving smooch, coating her face and the front half of her body with Sammy’s sticky black lipstick. She laid there for several minutes, basking in her girlfriend’s warm embrace and cuddling against the plush pillows before suddenly jolting up and shaking her head. She had a job to do, a mission, and as much as she wanted to, she couldn’t spend all night wallowing in her girlfriend’s lips.

Alicia put both hands into the gap of Sammy’s lips, pulling the squishy pillows apart and revealing her glistening white teeth. She could almost see her reflection in the shiny saliva coating the pearly whites, her heart skipping a beat as she realized she was in for the deepest kiss of her life. Nestling her body between Sammy’s lips, she shoved her hands between a small gap between the incisors, and with no small amount of effort pried the mouth slightly open. She barely had time to congratulate herself before the lips suddenly pressed against her, her blood running cold as she heard Sammy murmur; Alica was certain she was busted, but was caught off-guard as her entire world suddenly shifted. The small act of Sammy rolling onto her back in her sleep was like a roller coaster to Alicia, as suddenly she found herself laying on the very tip of her girlfriend’s tongue.

Alicia clung to her girlfriend’s tongue, the blonde genuinely surprised at how scared that little motion made her. She laid there for a moment or two, letting her heart rate settle as she briefly reconsidered what she was doing; however, the sensation of the squishy tongue underneath her and the soft lips surrounding her won out over her self-preservation instincts, and she slowly and carefully crawled over the tip of the tongue and peered down. The inside of Sammy’s mouth was pitch black, but she knew that just below there was a tight, pulsating tunnel waiting for her. She took a deep breath to steady herself, accidentally getting a noseful of her girlfriend’s breath; it was obvious that Sammy hadn’t brushed her teeth before bed, and the slightly spicy scent of whatever she had for dinner was mingled with the much less pleasant smell of morning breath. Alicia scrunched her nose but wasn’t deterred; she’d come this far, and there was no backing out.

Giving a short prayer to whatever deity may have been listening, Alicia slid down the slimy muscle face-first, letting out a yelp of excitement like she was going down a water slide as she narrowly avoided crashing into Sammy’s tongue piercing on the way down. The blonde had seen her girlfriend swallow a 2 foot gummy snake on a dare, and thus had no fear of choking her; her confidence proved to be well founded, as when she hit the back of Sammy’s throat the muscular tube didn’t hesitate to engulf her rather than cough her out. Alicia felt incredibly powerful muscles wrap around her as she was dragged into the esophagus, her face reddening with embarrassment as the slimy walls pressed against her nude form. She kept lewd thoughts firmly out of her head as she was carried down the powerful tube, instead enjoying the full body massage as she listened to the noises of her lover’s body. Alicia couldn’t help but find the gentle sounds of Sammy’s breathing incredibly cute, but the low, ominous thumping of her heart made her think of various horror games the two of them played together. The noise below her was the one she was most excited to hear; the wet, meaty gurgles of her girlfriend’s stomach made her giddy with anticipation. Anticipation for research, obviously; she definitely wasn’t excited because she was into this or anything.

After what felt like an eternity of being pushed down the muscular tube, Alicia felt the top of her head come into contact with something hard. She didn’t have time to think before the ring of muscle opened, sending her dropping into a much more spacious place. She was completely blind in the pitch darkness of her girlfriend’s interior, but it didn’t take a genius to figure out where she’d ended up. Alicia reflexively pumped her fists in the air in victory at having made it to the stomach safely, accidentally punching the top of her girlfriend’s stomach. She stopped dead in her tracks as she realized what she did, freezing as she hoped that Sammy wouldn’t notice her. Luckily, it seemed that her lover didn’t even register the blow, causing Alicia to let out a sigh of relief. Briefly, she thought it was strange that she was even able to reach the top of Sammy’s stomach since she should only have been around two inches tall, but that thought soon left her head as she flopped against the side of the gut.

Alicia nestled against the wall of her girlfriend’s stomach, cuddling against it as she splashed her feet in a small pool of acid. The pill worked like a charm; although she could still smell the acidity in the air, she felt zero pain or anything as the digestive enzymes coated her. She was practically giddy as she hugged the muscular wall, incredibly excited to be close to her lover like this. She rubbed the stomach gently like she was trying to ease the stress Sammy was dealing with, peppering the wall with kisses as she did so. Alicia knew in the back of her head that she should explore the digestive system completely, mapping out every detail and examining the digestive process, but for the time being she was more than happy to relax in the stomach and cuddle.

Alicia was suddenly aware that her head was brushing against the top of Sammy’s gut. Her eyes shot open and she looked around in confusion despite not being able to see anything, not entirely sure what was going on. She straightened up and felt her feet press against the other side of the stomach, a jolt of panic going through her as she realized exactly what that meant; the pill must have been wearing off, and she was growing bigger. Almost as if it was responding to her panic the growth sped up, forcing Alicia to curl up into a ball as she rapidly started growing back to full size. A thousand thoughts rushed through her mind all at once, first and foremost being that she was about to burst out of her girlfriend like an alien. She squeezed her eyes shut, tears streaming down her face as she braced herself for the worst possible outcome, when she suddenly felt herself stop growing. Her eyes shot back open, a mixture of relief and confusion welling up inside her as she realized she was back to normal and that the fleshy walls around her hadn’t burst open or anything. Alicia’s brain rushed at a million miles an hour, the girl still panicking at how everything went wrong.

What happened? Did the pills wear off that fast? Oh, god, they were still in development! Why didn’t anyone warn me about this?!

It dawned on her that if she was back to normal, then she’d soon suffocate in her lover’s gut, killed by the person she loved most. Tears welled up in her eyes as she accepted her fate, and she quietly sobbed as she waited for the air to run out.

…

She continued waiting, sure that this was the end.

…

It slowly dawned on Alicia that she wasn’t suffocating, nor did she feel the enzymes all over her skin digesting her. What was going on? She was like 99% sure she was a goner there. Did the effects of the pill all wear off at different times?

She stirred slightly, finding herself mostly unable to move with the muscular walls pinning her in place. Alicia’s face flushed with embarrassment as she realized she wasn’t in any immediate danger, and that she’d resigned herself to death a full 2 seconds after things went in a direction she didn’t expect.

Oh god, I’m glad Sammy was asleep for that…

Well and truly stuck in her girlfriend’s gut, Alicia figured that she wouldn’t be getting out any time soon. She’d have to wait for Sammy to wake up, ask her to swallow a shrinking pill, take the pill before it affected Sammy, and escape from her lover’s gut… one way or the other. Alicia had just enough wiggle room to bury her face in her hands and groan as she realized that she would have to explain exactly how she got into this situation. This was supposed to be a quick in-and-out, and now she was trapped in this humiliating position.

Although the circumstances weren’t fantastic, Alicia had to admit to herself that she was still enjoying herself. Although the pressure was uncomfortable and she had zero room to maneuver, the pulsating stomach walls felt extremely relaxing against her skin; it was like she was being hugged all over her body at the same time, a thought that made her smile to herself as she gently rubbed the inside of her girlfriend’s gut. Sammy’s soft breathing and now much less intimidating heartbeat soothed Alicia’s nerves, and before long she found herself drifting off into a peaceful sleep of her own.

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Completely exhausted from her dead-end food service job, Sammy slept like a baby until her alarm mercilessly shattered her peaceful rest. The goth reflexively slammed down on the snooze button, a habit that had cost her several alarm clocks in the past, and begrudgingly opened her eyes. Today was her day off and she had planned to sleep in, but in her exhaustion last night she’d forgotten to turn off her alarm. Knowing she wouldn’t be able to fall back asleep, she groaned and tried to sit up, ready to make herself some breakfast.

“...Hunh?”

Her half-asleep brain didn’t register what was wrong at first, only knowing that she was pinned underneath something. Assuming it was her girlfriend she lazily tried to shove it off, only for whatever it was to drag her off the bed with it, the goth landing on the object with a hard THUD. Sammy was dazed by the sudden fall, unsure what was happening, when the object started complaining.

“Ooooow! What the heck, Sammy? I was sleeping…”

Sammy recognized the high-pitched, muffled voice, and was instantly awake. She stared wide-eyed at the round, tan glob she was laying on for a second, then with a yelp tried to clamber off of it. She fell back onto her butt and the glob followed, resting in her lap, and it took her a few seconds to realize that it was her bulging stomach.

“What the FUCK?!” Sammy yelled as she pressed her hands into her gut, suddenly feeling very sick. She felt something shift in her stomach, and suddenly the contents of her stomach pressed against her hands, almost like whatever was in there was trying to hold them. From the depths of her stomach, she heard her girlfriend’s muffled voice once more.

“D-don’t panic! This is fine, probably! I just had a little accident, that’s all!” Sammy’s panic and horror quickly turned to confused anger; she recognized Alicia’s tone as the one she would use whenever she royally screwed up and was trying to sound innocent.

“What do you MEAN, an accident?! How did this happen?! What kind of-” Sammy stopped dead in her tracks as she caught a glimpse of something out of the corner of her eye, and looked at the bottle of pills on her table. She looked down at her belly stone faced as Alica giggled nervously inside of her, well aware that she was in trouble.

“...Please tell me you didn’t.” she said, exhaustion clear in her voice.

“...I might have…” came the quiet reply, almost inaudible through the layers of flesh separating them.

Sammy groaned in frustration as she laboriously stood up, the weight in her gut making it difficult for her. Said weight was already talking a mile a minute, trying to explain it away. “O-okay, I know it looks bad, but hear me out! See, I’m doing my thesis on the human digestive system, right? So, I thought-” Sammy pointedly ignored her rambling as she adjusted herself to her new weight, finding herself getting used to it strangely quickly. She slowly made her way out of her room, taking in the strange sensation of having an entire person in her stomach. She hated to admit it, but it felt weirdly good to her on a level she never would have expected. Sammy was reluctant to use the pill before because she was afraid that Alicia would be digested, but she could tell her girlfriend was okay since she wouldn’t shut up. Half-listening to her lover’s excuses, she trudged to the kitchen with a tired expression.

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“-So it seems that I’m safe, but I can’t get out right now! So, uh, you know those pills on your table? Do you mind- ah!” Alicia suddenly gasped as she felt something mushy plop onto her back, sending a shiver up her spine. She hadn’t heard a response from Sammy the whole time she’d been explaining herself, so she was caught totally off-guard by that. “S-Sammy! What are you doing?!”

“Havin’ some cereal.”

Alicia’s eyes widened incredulously. “What?! I’m still in here, you know! Just go get the pi- ah!” She shuddered as another glob of chewed cereal rained down on her shoulder. She felt a sudden pressure on her forehead, quickly realizing it was her girlfriend poking her in the head.

“Oh, I’ll get you your stupid pill later. For now, this is your punishment.”

Alicia was extremely confused. “P-punishment?”

Alicia felt another poke as her girlfriend continued. “You waited for me to fall asleep, then did something I told you I was uncomfortable with. That’s no bueno, babe…”

She suddenly felt a surge of the same shame she felt in her more lucid moments last night. Sammy was right, of course; there wasn’t really a good excuse for what she did, whether it was for research or for her own pleasure. Alicia was more prepared for the next plop of chewed up cereal, although it still made her instinctively grimace.

“Look, I’m sorry! I know I messed up, but please let me out! This is soooo gross!”

Alicia heard her girlfriend hum to herself in thought for a second before feeling yet another poke. “Nah, you’re gonna stay in there while I enjoy my day off. This is your punishment for going behind my back…” Another plop, this time a less mushy glob of something other than cereal. “I’ll let you out later, okay? For now though, you’ll just have to endure it~” Alicia blushed at her girlfriend’s teasing tone, grumbling as she accepted her punishment for the time being. Letting out a sigh, she gently rubbed the inside of Sammy’s gut, resigned to being teased for the rest of the day.

“…I’m sorry… I love you, Sammy.”

She felt a gentle pressure on her head, and blushed even deeper red as she realized Sammy was affectionately petting her stomach.