The Gas Tank

Mei is a college student, allong with her class she's on a field trip.

Mei hasn't particularly had any issue with gas production within her body but she had natural strong buttocks and sphincter, so she became used to holding everything in till the pressure became enough for her to let it go.

But of course her belly always looks bloated and somewhat distended from all the pent up gas.

During the first day Mei, Molly and 3 other friends got some free time in the hotel to sorta get used to their new room.

"Hey guys, listen to this one" said Mei.

BRRRRRRRRRRRRRRRRRRRRPT

A fart which lasted a solid 10 seconds.

"Phew what did you eat Mei, jesus" said one of her friends.

"Sorry, that's pent up gas from the bus ride, had to hold it because I didn't really got to sit comfortably".

"Pfff that's nothing" said Molly, another friend of Mei, somewhat obese, so one of the few capable of challenging Mei on the fart department.

BRAAAAPT

A really really wet fart, definitely not as long of loud as Mei's but it definitely stank way worse.

"Oh god, Molly no, you fat fu... oh god my nostrils"

One of the teacher came running to the room.

"Girls, we got a complaint from the hotel about inappropriate noise and a bad sta... oh god, it definitely comes from here.

What on earth have you been doing here to prodice this abomination?"

"Molly has been farting non stop" said Mei while pointing at Molly.

"Hey, you al..." said Molly

"Ok, that's it, from now on, if I hear or smell another fart from this room all of you will get extra work for the weekend" he said with an angry tone and left.

"God dammit Molly" said Mei.

"Hey this is not only my problem" said Molly.

"Yeah, we didn't even have anything to do with any of this, how are you going to take responsibility Mei?" said the 3 other friends.

"Whaaa me?"

"Yes you, you know what, here's a hose conveniently laying on the ground, let's plug it up your butt and fart into it whenever we need to, you keep everything inside either way so why not ours as well".

"W-well you see..." said Mei before the 3 girls grabbed her and pulled down her pants revealing her firm thick butt.

"That's what you get for not being well mannered" one of the girls said while plugging the hose into Mei's butt.

One of the other girls connected her butt to the hose.

bbbbbbrrrrrpt ppppppprrrpt

Those farts could be heard exclusivity from within Mei's stomach.

"Hahaha, me too" the other girl grabbed the hose and jammed it up her butt.

BRRRRRRRRPT

"Omg, did you hear that one".

"Haha dfinitely, here me too"

BLORPT

"Whatever I guess"

"Oh oh me too" said Molly.

"No, No, not you, I can take you guys but let's make this promise that I won't play gas container for that blimp" said Mei.

"Ok, deal" she said.

Every day they let out their gas into Mei's bum.

Mei's belly became slightly bigger everyday but she was used to this pressure so she didn't mind.

Molly also seemed to be doing well, not like she would need to be worried with her sheer capacity.

On the 4th day Mei started to get slight cramping, so she asked if they could go easy on her by not eating too much gassy food.

They all agreed.

That evening in the tavern where they eat.

Curry, they serve curry tonight, of all things.

Mei looked horrified.

"Girls please take me in consideration here".

Upon saying that everyone looked disappointed but it's not like they could be mad at her.

With that everyone only took halve a potion curry except for molly, she was stuffing herself with curry.

"You better be able to control that Molly" said on e of the friends.

"Yeah don't worry, I'll be fine".

A bit later on their way back to their room, everyone was already used to the stomach growls of Mei but this time, it wasn't only Mei.

Molly felt her bowels cramping "oh god, this curry is not agreeing with me and I don't have a lot of space left to begin with", and decided to ignore it for now.

When they reached their rooms Mei grabbed the hose.

"Phew it's the last day, my belly was starting to cramp" Mei said while rubbing her bulged belly, it looked strained.

...

"Oh god, today's load is hot, I guess we can thank the curry for that, though thanks for not eating too much" said Mei.

"Hey molly, you've been silent for a while, you still holding up?".

"Yeah I'm fine" said Molly while trying her best not to let the cramping get above her.

The rest of the evening they played card games till they started to fall asleep.

The night was somewhat restless for everyone in the room, was it the stomach growls from Mei and molly, was it the fact that this was the last day of their trip who knows.

Suddenly "PBBBBBHT.".

"Mei NO, is your water breaking or something"

"Pls no Mei, we got so far".

"Guys guys, it wasn't me, I'm fine" said Mei.

"Molly was that you?"

Molly's face was bright red of embarrassment "N-No...PHHHHHHH.".

"Molly stop, NO".

"I can't, I'm doing my very best to keep everything within but my anus isn't holding this".

They opened the windows in attempt to get the stench away as fast as possible.

"Let's hope they didn't hear that, the stench should be gone soon as well"

"Molly can you hold it?"

"Ye...BRRRRRT NO NO, I'm so sorry, I can't hold it anymore"

"God no molly, we got this far"

Everyone was panicking, until suddenly one of the friends grabbed the hose and jammed it in Mei's ass and walked towards Molly.

"No, no, you guys promised that I wouldn't need to go this far besides I'm practically full" said Mei.

"Please Mei, we're so close, we know you can handle this, just bite the bullet for us, please".

Mei let go of the hose, and jammed the other end into Molly ass.

"Atleast do it slowly moll..."

PHHHRRRRRRRRRRRRRRRRRRRRRRRRRRRRT

A deep sound could be heard from within Mei's belly.

Mei clenched het buttocks and did her best absorbing the pressure.

Everyone was sweating and looking at Mei's belly which was slowly expanding even further.

Molly stopped, she was panting.

There were footsteps in the hallway, everyone got back in their bed as fast as possible.

Luckily the stench already disappeared.

Mei was calming down untill suddenly she felt really hot around her anus, molly was letting out a really hot wet fart, despite the fact that molly couldn't hold it anymore she put all of her effort into making sure her farts were SBD ones.

Mei felt her belly bloating up with hot air, enough to make her sweat.

The atmosphere was tense, no one dared to say a word out of fear of the teachers hearing and punishing them.

Mei just hoped molly was close to finished.

A few minutes later molly was still transferring her gas to mei but the pressure started to subside.

Mei on the other hand was doing her very best clenching her buttocks around the hose so nothing could escape, lucky and unlucky for her her ass was rather tick to begin with, good to give birth but also good for clenching her anus.

Her belly on the other hand was heating up significantly, becoming harder as well.

She also had to start gulping down her belches because those were going to stink as well.

Finally the pressure died, mei laid on her back sighed out of exhaustion but also satisfaction. She looked at her belly, it was as hard as a basketball but also started growing in width because her bowels were just going to as much space as possible.

Everyone sighed.

"Let's just sleep now, shall we ? "

"B-but what about the hose" asked mei.

"lets just leave it like this to be sure, if molly had an upset stomach then it might not all be over yet, though rest assured I'm sure the worst is behind us and besides you still look like you're holding up just fine".

Mei frowned but agreed in the end.

Everyone went back to sleep.

After a couple hours everyone was all soundly asleep, snoring could be heard through the whole room.

Mei woke up, she felt her anus heating up again.

"Oh god molly please"

She wanted to poke molly but she was fully asleep.

"Is she farting in her sleep? "

Suddenly a huge cramp hit Mei, followed by a big roar from within her belly.

She felt like someone was trying to pushing a bowling ball into her anus, widening her sphincter in the process.

It was mollies gas again even though she was asleep.

Mei herself to clench her buttocks again but not like she needed to anyway with this much pressure.

"The hose probably keeps her anus open, making it easy for gas to escape while she's asleep".

Suddenly the pressure stopped and was replaced with something thicker and hotter even, she started hearing slosh noises from within her belly and then it hit her.

Molly was having diarrhea, Mei went pale and started sweating even more.

She wanted to scream, she wanted to pull out the hose, but she sucked up her pride.

Belly was becoming heavier and heavier, *slosh* *slosh* could be heard from her belly.

It ended after a couple minutes, Mei took her chance and pulled the hose out of molly's ass.

Mei was exhausted and panting, oh no, she felt a gigantic belch coming up.

"oh God no, not like this" she thought.

"drastic measures then", she grabbed the other end of the hose and put it in her mouth, she didn't want to think too much about this decision, but it was for her own good.

She belched straight into the hose, she felt the sir flowing into her anus, it made bubble noises within because her bowels were still filled with molly's Diarrhea.

She laughed a bit about the bubbles but it didn't last long because she felt her belly reaching her limit with load creak noises that resemble metal being bent.

It's over, she thought, she held onto her last bits of strength till she fell asleep.

The next morning everyone was staring at Mei's gigantic belly, it definitely resembled a belly of a pregnant woman only wider.

All of her friends asked what happened to her, but she kept quiet, she was too embarrassed about what happened yesterday night.

During breakfast Mei kept quiet except for the belches she desperately tried to hide.

Once they sat on the bus on their way back home Mei kept telling herself she would soon be home and be able to go to the toilet.

"Mei, teacher isn't on the bus apparently, so you can let out a bit if that would make you sit more comfortably"

"Sorry, I can't, Let's just wait till we're home" she was ready to cry at this point.

"Mei are you crazy, look at your belly, you have the right and our permission, no, you deserve to let out some pressure."

"No, I can't alright! I-it's stuck"

"Stuck?"

"Yeah, I need to go number 2"

The girl become pale and slowly walked back to her seat.

The bus stopped at a tank station.

"Oh god, I can;t take it anymore" said Mei.

She stood upright and started walking to the restroom of the tankstation.

The way she walked with the balloon of a belly she had was comedic, like a penguin.

She reached the restrooms.

"Yes finally".

She slam the door and lowered her romp onto the toilet seat.

...

FSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSTTTTTTTTTTTT

Against the toilet, a hot stream of diarrhea.

SSSSSSSSSSPHHHPPPHTTTTSSSSSSSSSSSSSSSSSSPPPPPPTTTSSSSSPPPTSSSSSS...

Some farts managed to escape as well, this stream lasted about a minute.

Mei was panting, "oh god, now comes the main deal".

BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT---

A fart, if only you could call it a fart, outside it felt more like an earthquake.

A tornado was raging in the restrooms.

Mei got the blast of wind straight into her face because of the split between her legs.

She forces her legs closed which forcefully stopped the fart because the gas doesn't have anywhere to go, Mei's butt and leg muscles were strong enough to make the toilet fully airtight.

Mei was tensing her bowels but could not get any gas out, her belly was growling.

After increasing the pressure on her belly she managed to get gas out again only...

PPPPPBBBBBHHHHHHT...PPPPPBBBBBHHHHHHT...PPPPPBBBBBHHHHHHT...PPPPPBBBBBHHHHHHT...PPPPPBBBBBHHHHHHT...PPPPPBBBBBHHHHHHT...

Mei was rocketing herself of the seat, making small jumps in order to let the air escape.

She was totally just rolling with the moment, not thinking straight at all, she grabbed the handles next to the toilet firmly, forcing herself onto the toilet seat.

"HAHAHA, now there definitely can no air escape out of the toilet bowl"

Mei started pushing again, only to let out a small scream and let go of the handles.

*BLORB*...PPPPPBBBBBHHHHHHT...

"Ow ow, that hurt. Wait did I just push my gas into my vagina through the bowl?!"

*sigh*

"Oh, I can just lean a bit forward to the gas escapes from between my buttcheeks".

BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR---

It started again, the artificial earthquake.

RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT---

Mei felt her belly deflating, slowly.

During the fart small pieces of feces also escaped her anus, shooting against the toilet bowl.

RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT---

"I'm sure that I'm making a typhoon down there in my pool of diarrhea".

RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT.

The fart finally ended.

Mei is panting, that definitely lasted a couple minutes, probably around 10 minutes, 8 of which are definitely farts.

"phew"

Blerpt...brrrrRRRRRRRRRRRRRRRRRRRRRRRRRRT.

BRAAAAPT

BROOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOORRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRTTTTTTTTTTTTTTTT.

Mei's belly once more looked more human like.

ssssssssssssssssssssssssssssssssssssssssssSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSPPPPPPPPPPPPPPPPPPPPPPPPPPPPPBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRROOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOT

"Ok that's gotta be it" said Mei, sweating from top to bottom.

She grabbed some toilet paper and began to wipe her butt.

Afterwards she pulled her pants back up.

BRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRTTTTTTTTTTTTTTTTTTT.

A really wet fart through her jeans.

"oh god yes"

she flushed, it worked surprisingly.

Outside she was greeted with laughter, smirks and just all around amazed faces.

Mei became bright red.