(WARNING: This story contains M/F facesitting and ass worship, M/M and M/F vore, digestion, butt expansion, mild weight gain, male farting, and touching of a pp. Every character is 18+.)
 
 
  Peter’s hands gently ran down his face, rubbing from his red cheeks to his dripping chin. His mouth hung agape, tongue resting on his lips as he moaned in ecstasy. His body shook and trembled. Waves of pleasure went through him, rising up from his bottom. MJ’s face was buried deep in Peter’s plump ass, licking and prodding at his tight, tense hole. He squeezed down on her face, rubbing his anus on her.
 
 
  Peter and MJ had been dating for several more months, and after Peter’s gassy episode their relationship quickly took a turn for the physical. He wasn’t exactly comfortable with going all the way, so MJ managed to convince him to try something else. MJ had an obsession with ass. She couldn’t exactly explain why, but she had always loved the idea of appreciating and worshipping them. And after Peter farted around her, she gained an obsession with his.
 
 
  What started with Peter quickly letting one or two farts slip every now and then became him sitting his naked ass directly on her face. Sometimes he didn’t even have to fart. They would do this frequently. It had become somewhat of a game. For hours he would sit there, almost forgetting that she was even under him, and then all of a sudden she would start licking and kissing all over. Even now, he was halfway through Hacksaw Ridge when all of a sudden she started doing this.
 
 
  Peter rubbed up and down his shaft, moaning openly. She was going the extra mile trying to stimulate him, repeatedly hitting his prostate with her tongue. He wasn’t sure how much longer he could hold on. Cleaning up was such a difficult chore. He could never move after they were over and done with. He tried to hold back his nut, but he could feel himself about to burst as she kept licking and kissing and rubbing.
 
 
  “Could your butt get any bigger, babe?” MJ asked, briefly removing herself from his cheeks to speak. Peter pulled her back in but suddenly gasped as he had an idea. Before she could get back into the groove of things he moved aside and started pulling his pants back up. “B-babe? What are you doing…?”
 
 
  “I-I got an idea! You were asking if my butt could get bigger, right? I actually might have a way to do that.”
 
 
  MJ blinked. Peter was a smart kid, albeit not the best socially. But even he would know what a rhetorical question was. “Uh, you weren’t really supposed to take that seriously…”
 
 
  “No no, I-I know! But I think you’ve got a point. If you like my butt so much than I should make it bigger for you, right?” He asked, pulling his shirt and jacket back on. He walked over to the window and slid it open. “I should be trying to make this more pleasurable for you. You make me so… so excited,” he was blushing, “so I should put in the effort to excite you.”
 
 
  “You’re so self-conscious. You excite me fine. I don’t need you to try and be more attractive for me. I like how you are now.”
 
 
  “No no no, trust me, this is a great idea! Umm, do you have a ladder? I promise that this is going to be turn out wonderfully! I’m going to make you very happy. I didn’t realize there was no way down from here.”
 
 
  Michelle was confused about why Peter would bother asking for something so ridiculous, especially given his Spider powers. She had assumed his secret long beforehand, and he was finally able to admit things only a few weeks prior. “Can’t you just jump down and start swinging off of buildings? It’s past midnight and there are no cameras in that alley so nobody will see who you are.”
 
 
  “Oh no, it’s not for now, it’s for later. Trust me, you’ll love this. I just need a ladder or something. Maybe a rope? Maybe we can tie a bunch of sheets together?”
 
 
  “I’ll go look for one. Just… don’t do anything stupid.”
 
 
  Peter pulled on his mask. “Don’t worry, I won’t!” He said, before leaping out of the window, backward.
 
  - - - - - - - - - - - -
 
 
  “Alright, Karen. You said this is the place, right?” Peter stared at the enormous apartment building. Most of the windows were dark and quiet, but there was always something going down in New York City. His Spider-Sense had detected that something was amiss here, and the A.I. in his suit confirmed that unusual activity had been sighted there recently. Now it was time for him to find out what. “Which room should I be looking at?”
 
 
  “Newspaper reports say an inebriated man has been wandering around this building and screaming at people in the lobby. No room number has been given. His name is unknown. Security footage is too blurry to identify.”
 
 
  “What? Y-you can do the ‘enhance’ thing, right? On all those shows they can just enhance the footage and… Alright, I guess we’ll have to do things the old-fashioned way. And by that, I mean climbing up the wall and looking into every room…” Peter reeled back, jumped, and stuck to the side of the apartment building.
 
 
He climbed to the first story windows, finding all of them to be blocked by curtains or completely dark and empty. No sign of any commotion. As he kept scaling the walls, he began to feel his senses tingling more and more, pulling him upwards. He jumped to the next story, peering into a lit window, only to find an old woman reading in bed. Nothing out of the ordinary yet. Next floor, next window, no sign of anything strange in there. He kept going upwards, feeling the pull of whatever he was looking for.
 
 
  As he was jumping past a window, he noticed something moving inside. The lights were off, but a rather large lump was shifting around under the covers. “I wonder what...oh… I should probably go…” He said to himself, as he continued his ascent. But as he tried to get away, he couldn’t shake off the feeling in his crotch. He had cut things short back with MJ. He needed to find release somehow. His nethers were aching for something to tantalize them. Even though it wasn’t the most heroic thing to do, Peter decided to take another look at whatever was going on in that room.
 
 
  The lump in the bed stopped as whoever was inside realized they were being watched. In his nervousness, Karen automatically tightened his grip, and he was unable to let go of the wall. “K-Karen! No no no no no! Now is not the time for-”
 
 
  Out of the blanket came a large cat, which climbed up to the window and stared at the boy on the other side. Peter gasped and chuckled, finding all of his worrying and his despicable horniness to be for nothing. “Oh man… I thought I was in trouble for a second… Hey, kitty kitty. There there… I thought these apartments didn’t allow pets.”
 
 
  In a rage, the cat started clawing at the window, leaving huge marks in the glass. Peter flinched and nearly fell to his death, but his suit kept a tight hold on the wall for him. “You better stop that now or else your rent is gonna go up.” He jumped away and pressed onwards. Each and every stop lead to empty rooms or sleeping New Yorkers. No sign of any clear and present danger.
 
 
  But as he neared the rooftop, the feeling grew more and more intense. He shifted from side to side, finding that it was more powerful as he went left. He looked up to see another farm window, but even from afar he could tell it was the one. "There! That's where the culprit is!" Peter rushed for it, swinging up to one of the top floor windows. To his surprise, it was covered in dark black tape. "That's strange… it must be broken."
 
 
  Peter clawed through the tape and slunk into the apartment, listening for any commotion in the other rooms. He could faintly hear incomprehensible ramblings, yelling, and the sounds of things breaking. “Sounds like some kind of domestic dispute…” He tiptoed into the halls, making his way to the living room area.
 
 
The walls were filled with holes. Shards of glass, broken pieces of furniture, and discarded papers littered the floor. A man was spinning around, throwing things and smacking the walls with a mallet. His hair was unkempt and he stumbled as he moved. The floor creaked as Peter stepped forward, and the man turned around and spotted him.
 
 
“YOU!” He pointed his mallet at Peter. “You’re that superhero guy from YouTube! The Amazin’ Spider-Man!”
 
 
“Well I wouldn’t say ‘amazing’ but thank you…”
 
 
“So you’re here to bust me, huh? Figured out I was wreckin’ my ex-girlfriend’s apartment? That fucking asshole downstairs was always prying into our business!”
 
 
The old man below them beat on his ceiling with the wooden end of a broomstick. “Don’t make me come up there!”
 
 
“I knew it! You think you’re hot shit, don’t you, Spider-Boy? Doin’ your fuckin’- your flips and your somersaults and shit?! You’ve probably never struggled a day in your life! You don’t even know what it’s like for us older people! You don’t know the shit I gotta deal with every day! Especially now that my girl is gone!” He smashed another wall.
 
 
“Actually I’m riddled with emotional problems,” Peter replied.
 
 
“Shut up! I’m gonna teach you what you get for talkin’ back to me! Taste my fuckin’ hammer, bitch!” The drunken man tossed the mallet at Peter. He quickly moved his head to let it pass, then used his webs to grab it by the handle and bring it into his hand. “So this is what it’s like to be Thor…” He said.
 
 
The man, enraged, grabbed furniture from the floor and started throwing it at him. Peter dodged what he could, using his webs to stick the other items to the wall. The man grabbed a potted plant and chucked its contents at Peter, causing him to cover his face as he was rained in the dirt. “H-hey! That’s not fair!” When he scraped the dirt off his suit, he saw that the man had picked up the television, and was preparing to drop it directly on his head.
 
 
  Peter rolled back as soon as the T.V. hit the ground, narrowly avoiding it. “I hope she had a warranty at least…” He did a few flips before getting to his feet. But the man had already grabbed more ammunition. Peter dodged a volley of liquor bottles, kitchen chairs, and pieces of fruit. He was desperately trying to think of a way out of this. “Come on… There’s gotta be something I can do…”
 
 
(I don’t care if this makes no sense, I thought it would be funny.)
 
 
  The man grabbed a peach from the kitchen and sent it hurtling towards Peter’s body. He suddenly had a fantastic idea. “Batter up!” Peter smashed the peach with the mallet, the force eliminating the fruit itself but sending the pit flying. It bounced off the walls, ricocheting around the room before smashing directly into the man’s head. He stumbled back and forth before falling flat on his face, unconscious.
 
 
  “That was a lot more work than I expected…” Peter said, sighing. He walked over to the unconscious body and grabbed it by the shirt. He started pulling his clothes off one by one, leaving him in only his socks and underwear. Usually, a straight boy his age would show more restraint doing something like this, but Peter was so used to this ritual that it was like second nature to him.
 
 
  Getting bit by a spider granted him several special abilities. Spider-Sense, superhuman strength, nuclear cum that can literally kill people (yes this is true look it up), and wall-climbing abilities. But these weren’t the only things he could do. He also discovered that he could swallow people whole. Usually, he would nab street criminals, gobble them up, and then run home, using his superhuman digestive system to work them off in mere hours.
 
 
  Usually, he would do this to get rid of them right away, but he had a different plan this time. Peter could use this ability to enhance the size of his ass. He could eat someone, digest them properly, and then grow out his features. He opened his mouth as wide as it could go and pulled the man’s head in. His mouth was filled with the man’s greasy, unkempt hair. Peter cringed at the taste but sucked him in deeper nonetheless.
 
 
  Peter’s mouth grew just enough to take the other man’s head in. His mouth was wrapped around his neck, as he slathered the man’s face in saliva. He heaved, trying to pull more of the random drunkard in. The man’s head created a sizable bulge in his neck as his head entered his throat. Peter squished his shoulders as much as he could, struggling to push them through his comparatively small mouth. Even with his powers, eating a human body was difficult.
 
 
  His mouth stretched over the shoulders, pulling them in and sending the head closer to his belly. He pulled in the man’s torso. Peter let out a muffled moan as he felt the man finally slither into his stomach. He felt himself getting hard again, but he had to save things for when he saw MJ again. The more that he swallowed, the more he felt aroused and inflamed. Peter pushed the man’s feet down his throat, swallowing the last of his body with a mighty gulp.
 
 
  The man was curled up inside, leaving him with a gigantic stomach. Peter gasped, sitting on his ass and struggling to catch his breath. Normally he would ‘relieve himself’ by now, but MJ deserved it more. He rubbed his belly, coaxing his hyper-acids to dissolve him as quickly as possible. He rose to his feet, running to the window and swinging back towards MJ’s apartment.
 
  - - - - - - - - - - - -
 
 
  Peter looked up at the open window. MJ was sweet enough to leave an enormous ladder for him. All he had to do was climb up and he would be back with his sweetheart. As he got on the first step, his belly got stuck in the space between. “D-darn… Come on, here we go… Hnng!” He climbed to the next step, struggling to slide his belly out. Unfortunately, it got stuck in the next space. After ten minutes of this, he arrived in MJ’s room. He squeezed his belly through the door, landing on the floor stomach-first. The poor man inside had already been converted to mush, so he wasn’t damaged by the fall, at least.
 
 
  Peter crawled up to MJ. She had fallen asleep during his absence, laying under the covers of her bed. Slowly, he lifted her blanket up to cover her face. He left one tiny opening where he could place his rump. Digesting someone gave him a lot of gas, and he knew MJ would love to be woken up by it. He ripped a nasty fart, which caused her blanket to puff up like a giant balloon. MJ at first began to thrash around from the smell, before she realized its source and began to breathe it all in.
 
 
  Peter tossed the blanket away and kissed her on the mouth. “I’m back, sweetheart! And I’ve brought a surprise for you!” He placed his gigantic belly onto her, smothering her body with it.
 
 
  “Wh-what the hell? How is this…? What?”
 
 
  “My superpowers gave me the ability to swallow people whole, just like a spider! I went out, found a criminal, and gobbled him up, just for you! He’s already started digesting. In just an hour he’ll be gone, added to my body mass. I’m hoping it all goes to my butt because I know you wanted me to have a bigger one.”
 
 
  Michelle was amazed. She caressed his stomach, feeling his warm, soft skin. She could barely get her arms around his entire body. She rested her head and torso on it, listening to his belly gurgle as it began to absorb what was left of the old man. She could see that his butt had grown a bit of extra heft, but it was only barely larger than it was before. She loved how he looked no matter what, but she was overcome with lust. She craved even more.
 
 
  “Peter, I have an idea.” She slapped his belly a few times, causing him to accidentally release another meaty fart. “Hehehe… So if you can swallow people, why don’t you try swallowing me?”
 
 
  Peter was stunned. He would have loved to gobble MJ down and add her to his massive belly, but doing so would lead to her demise! He couldn’t lose the love of his life in such a greedy and unfortunate way. “B-but Michelle, if I do that, you wouldn’t… umm… you wouldn’t make it…”
 
 
  “Think about it, smartypants. You eat me, you suckle all the flavor and nutrients you can, and then you spit me back out. I’ll add to your ass and still be able to worship it! Come on, Peter, let’s try it out~!”
 
 
  Against his better judgment, Peter decided to play along. MJ immediately started stripping herself bare. Peter didn’t even have enough time to remove his Spider-Man suit before she had pulled his lips apart and started climbing in. He gagged from her forceful entrance, rubbing her face with his tongue. She brushed past his uvula and forced herself into his esophagus without a second thought. Her shoulders, however, were trapped at the side of his mouth.
 
 
  Peter maneuvered so that MJ was above him, using gravity to make her descent easier. He pushed down on her butt, forcing her shoulders in and allowing him to slurp down more of her supple body. He was left with only her legs, which shimmied and squirmed as they tried to pull themselves in. Peter pushed her feet, swallowing every last bit of MJ.
 
 
  The whole experience left him hard as a rock. Peter couldn’t control himself. He started to rub up and down his shaft, stroking it with his fingers and playing with his tip. Even though he didn’t want to stain her sheets, he had no choice but to start jacking himself off. Michelle’s squirming inside of his stomach only heightened his arousal. He thrust into his hand and moaned audibly.
 
 
  MJ was thrilled to experience things from the inside. She was sitting on a mound of once human flesh, submerged in a boiling bath of digestive juices. Her body was curved up against the edge of his belly, leaving a slightly visible imprint on the outside. While she couldn’t see him touching himself, she could hear his cries of enjoyment and feel the vibrations through his stomach. Knowing her little idea caused him so much pleasure made her smile.
 
  - - - - - - - - - - - -
 
 
  MJ was out of breath. “Oh my God… Th-that was… that was amazing!” She had been mostly deprived of oxygen for a long time, trapped inside his titanic tummy. It had been a few hours, most of which Michelle spent sleeping and Peter spent masturbating. He had taken the liberty of cleaning everything up before they decided it was time for MJ to come out.
________________
 
 
  “Did you have fun?” Peter asked, stroking her hair gently.
 
 
  MJ slowly turned to face him. She had landed facedown on the bed after he regurgitated her body. She felt fairly normal, though her body had become slightly emaciated from all the nutrients she lost. The changes to Peter’s body were far more noticeable. He retained just enough belly to make him look like he was nine months pregnant. Not to mention his ass, which had grown to the size of two LEGO Death Stars!
 
 
  “PETER! You look... You look beautiful!!” She grabbed on to one of his cheeks, squeezing it in her arms and rubbing it all over. Her hands caressed every inch of his meaty ass, feeling how tantalizingly soft it was. She felt like she was laying on the world’s comfiest, smelliest mattress! They far exceeded the size of her head. He could probably sit on half her body at once.
 
 
  MJ felt herself getting wet as she kept playing with his buttocks. She kissed, licked, poked, prodded, rubbed, and even bit his booty cheeks, testing out how much they could bear. All the while Peter moaned at her touch. MJ ground against one of his cheeks, causing him to blush and shake, vibrating against her.
 
 
  “M-MJ… Do you want to get in?”
 
 
  Michelle nodded, pulling his Spider suit off and revealing his naked bottom. She plunged right into his crack, jabbing his prostate with her tongue. Peter’s asshole clenched around her tongue, holding it in place as she licked and suckled. “R-round two!” Peter chuckled.