Pinkie Pie was still sitting on the other side of the couch. She just stared motionlessly at Rainbow Dash's gurgling, drum tight belly. It rose and fell with each breath the sleeping pegasus took. Pinkie never knew that this little 'Rainbow-gobbles-up-ponies game' would turn out to be a 'Pinkie-gets-a-new-fetish-and-ogles-Rainbow-Dash game'. In her mind, that's what was happening. And, interestingly, this scared her a little. She didn't think too hard about the consequences of Rainbow's actions until she realized that Dashie probably wouldn't stop at Berry Punch. And Pinkie Pie wanted to see Rainbow Dash do that again. What if they got in trouble? What if their friends found out? What if the princesses found out? Is Rainbow turning into a monster?

As Pinkie stared, the belly started having that faint, black glow that it had when Rainbow first swallowed the black gem. An ominous, yet captivating gurgling sound broke Pinkie out of her trance. Pinkie hovered over her friend's slumbering body. The sounds and glowing continued. It was a little scary, at first. But, Pinkie Pie's curiosity got the better of her. She placed a hoof on the gurgling mass.

She suddenly felt the urge to rub it. Of course, she wanted to do that anyway. But, it was as if something was telling her that she was supposed to pamper Rainbow Dash and enjoy doing it. Pinkie began rubbing her best friend's stomach. It felt like rubbing a somewhat squishy bowling ball. She could kind of feel Berry Punch's body. But, somehow, it seemed as though Rainbow was getting softer as Pinkie Pie rubbed her tummy. Rainbow Dash moaned lethargically in her sleep with a satisfied grin on her face. Then, Pinkie noticed that it was shrinking slowly, and any sign of Berry Punch was disappearing.

Rainbow Dash's belly shrank more and more until it was back to a relatively normal size. Pinkie was amazed and realized that this is probably another effect of the gem. A soft belch came out of Dash's muzzle. She burped in her sleep. This made Pinkie Pie giggle a bit, and she thought it was cute. Although, Pinkie Pie noticed that her hoof sank a little more than she expected it to. She was pretty sure that Rainbow normally had a very lean underbelly. Then, she looked her over. As Pinkie Pie took a good, long look at Rainbow Dash, she noticed that everything on her widened very slightly.

"Teeheehee. I guess ponies are fattening. Huh, Dashie?"

She knew that if Rainbow Dash was awake, she would probably threaten to hit her for saying that. But, it was true. Rainbow Dash gained weight from digesting Berry Punch. She seemed to be about ten pounds heavier. Her waist had widened very slightly. And, her rump was a little rounder. Pinkie Pie was beginning to think that her rainbow maned friend would look very cute with some extra padding. Her previous fears regarding Rainbow's mutation and new lifestyle were still lingering in her thoughts. But, she didn't care. Right now, she just wanted to sleep next to her lazy, pony-eating athlete. And, tomorrow she would begin to fatten her up with more ponies.

Pinkie Pie laid down, closed her eyes, and drifted to sleep. After a few minutes, Rainbow Dash's paunch began to gurgle again. This time, it sounded empty. Rainbow Dash licked her lips and drooled as she slept. "Mmmmmm-more.......More......ponies....."

_________________________________________________________________________

The orange horizon glowed brilliantly as Celestia's sun rose over it. The serene light crept over Ponyville to stir it from the stagnant night. As soon as the light poured into Berry Punch's home, Rainbow Dash stirred. The sun wasn't the only thing making her rise so early.

*GRRRRROWLLL* *YAAAAAAAWWN* "Ugh......*GRRRROWLLL* Okay! Okay! Time for breakfast! I'm starved!.......Wow......I can't believe I'm already so hungry. I feel like I haven't eaten in days! And I ate a pony for dinner! And, I don't normally get up this early! My stomach must've wanted me to wake up as soon as possible."

While Rainbow Dash was distracted by her gut, Pinkie Pie was already waking up as well.

"Well, I usually get up this early!!"

"GAAH!!"

"Every day is too short to waste on sleep! And, a new day means new fun! And I know just what today's fun is gonna be!"

Rainbow Dash quickly lost her shock and confusion when she inhaled through her nose. It was that smell again - just as strong as before. She began to drool as she imagined what succulent confection Pinkie Pie must taste like. Her need to experience last night's sensation was already so intense that she had to restrain herself and warn Pinkie.

"I-I need another pony, P-Pinkie! This gem is more powerful than I thought! I-I'll eat you if I don't get somepony else, fast!!"

*I can't believe this! Pinkie Pie is my best friend!! I can't let a stupid gem drive me to kill her!!........B-but.......SHE SMELLS SOOOOOOO DELICIOUS!!!*

Pinkie Pie beamed excitedly. She then wore a mischievous smirk. "And so, today's fun begins."

"H-huh?"

Pinkie Pie quickly bolted out of Berry Punch's home and scanned the area in front of it. Perfect. She knew everypony in Ponyville and what they did on a daily basis. So, she knew that Mr. Greenhooves and Mr. Waddle, two elderly stallions who were good friends, would be taking their early morning stroll together. They are both pretty old and a little senile. So, they would be two more easy meals for Dashie. Pinkie waved to them to get their attention. Mr. Waddle and Mr. Greenhooves trotted over to Pinkie - who was still in front of Berry Punch’s house.

“Good morning, Mr. Greenhooves! Good morning, Mr. Waddle! Wanna come in? Berry Punch invited me to.....to.....um.....try out this new wine that she made! Yeah.....W-wanna try it with us?”

“Sure thing, Pinkie! Some good wine in the mornin’s a great way to start the day!”, said Mr. Waddle.

“Yep! I haven’t had a good drink in a good while!”, said Mr. Greenhooves.

Pinkie opened the door. And, when Mr. Waddle walked in, a rainbow streak passed the inside of the entrance at lightning speed. Mr. Waddle vanished in that instant. Pinkie Pie and Mr. Greenhooves jumped back before they could even walk in themselves.

“W-w-what in Sam Hill was that?!”, Mr. Greenhooves asked in fright.

Pinkie sputtered, not knowing that Dash would do that. “Uuuh-uuumm...”

*uuuurrp*

Pinkie Pie had to get rid of Mr. Greenhooves now, before he suspected anything.

“W-well....It was Rainbow Dash. Berry Punch invited her over too. She must’ve been a bit tipsy, and sooo excited to see Mr. Waddle......that um.....sheeee-gave him a-strong-Rainbow-hug!! You ever had one? ”

“Oooh. Well, now. That there’s kind of her. I should go give her a nice hug too. Let’s go in and join the fun!”

“Yeah! Rainbow might be a bit....bloated though. But don’t worry! She’s fine!”

*Phew! Looks like Dashie might need to eat Mr. Greenhooves before digesting Mr. Waddle. He could find out that Rainbow is eating ponies and ruin our fun!*

Pinkie Pie followed Mr. Greenhooves into the house. She shut the door, immediately, and locked it. When she turned around, she saw Mr. Greenhooves just standing there, mouth agape. He couldn’t stop staring at Rainbow Dash - who was lying with her back against the floor, with an engorged middle. She was softly moaning as she rubbed it tenderly. That is, until she noticed Mr. Greenhooves staring at her.

“Uh....heh heh....Hey-*hic*, um....old guy....W-what’s up....” She blushed and gave him a fake smile that was poorly hiding her worried expression. Sweat began to form on her brow as she realized that she couldn’t get up and get him while she was lying on her back, with her belly weighing her down. She thought that she was busted for sure. But, then she noticed that Pinkie Pie was right behind him and in the way of the door. Pinkie just grinned at her and winked.

Mr. Greenhooves shook his head. “Well....howdy, Rainbow Dash. Seems like you got ahead of yerself and drank all the wine.....right?”

Rainbow Dash slowly darted her eyes back and forth. She blinked and looked at Pinkie who looked like she was telling her to roll with it. “Heheheh. I.....guess I did, huh? Man-*hic* that was some gooood wine. *hic*Heheh....” She noticed that he was blushing a bit. That’s when she got an idea. Her expression changed to a sultry grin with half-lidded eyes.

“~Hmmm.~ I might’ve drank all of the wine....But....you can still....taste it....~If you know what I mean?~” She waved him over with her hoof.

Mr. Greenhooves blushed furiously. He thought about how he was too old for her. But, she wanted him to kiss her. Being kissed by Rainbow Dash, one of the sexiest, young, pegasus mares in Ponyville? He wasn’t going to let this opportunity pass. He was an old stallion who didn’t get much excitement these days. Besides, she’s probably drunk off her flank and won’t remember this. He totally forgot about Mr. Waddle and what he came here for. He also didn’t notice that Mr. Waddle’s glasses and bow tie were on the floor.

“W-why yes, Ms. Dash.....I know just what you mean...”

He trotted over to Dash’s side.

“~You can get on top...if you want...~”

Immediately, Mr. Greenhooves laid his belly on her’s. This caused some gas to be pushed out.

*BURP* “Oops. Heheh...excuse me.”

It was odd. Mr. Greenhooves felt as if something was moving inside of Rainbow Dash’s stomach. And, he didn’t smell any alcohol on her breath. In fact, the gas that she belched out had a hint of a familiar, cologne smell to it. But, he didn’t care. He closed his eyes, puckered his lips, and lowered his face towards hers. His hat slid off his head and landed on the floor.

*Ugh. Gross. I’m gonna finish him, fast.*

Rainbow’s maw widened. She grabbed his cheeks with her fore hooves and stuffed his whole head in. He tasted like a coffee cake. Nothing too special. His friend was pretty much the same. At least they tasted pretty good. It seems as though the gem makes literally everypony delicious. And, Dash couldn’t get enough of it.

She proceeded to pull him further and further into her gut at a quick pace. Pinkie Pie was shocked beyond belief that Dash could eat two stallions in succession. She was getting greedier by the pony. Pinkie wondered if Rainbow could digest both of them as fast as she digested Berry Punch last night.

Rainbow Dash slurped up the tail and took one, final gulp. her hooves were caressing the large globe that was weighing her down.

Ooooo-*BRRRAAAAAAAAP* The black glow appeared on her gut again. She still didn’t notice it. But, she felt her belly urging to get rubbed. Although, she couldn’t reach all around.

“Pinkie....Oooooh......can you-*UURAP* rub my tummy?.....I.....can’t believe I just said that....”

Pinkie Pie was really enjoying this as much as Rainbow was. She wanted to comply.

Pinkie Pie ultimately decided to do Dash the favor. Rainbow Dash was actually asking Pinkie Pie to rub her belly. With her new-found fetish, Pinkie wouldn't say no to that. She went up to Rainbow - who's tight, squirming belly was raised high enough to be slightly taller than a mare standing on all fours. Rainbow Dash moaned as Mr. Greenhooves struggled. It only took a few more seconds for that to end. It seemed as though both stallions had either lost their energy or went unconscious.

"AAAWW. Their squirming felt really good. Ugh. I don't feel tired. Now I'm gonna to have to lay here and wait for this thing to shrink, so that I can move again. That'll probably take forever!"

Then, Pinkie Pie stood on her back legs and worked her magic. Her fore hooves massaged the cyan mass with such finesse, that Rainbow thought that she could be a professional masseuse pony.

"OOOOH-OOOOOH!! PINKIE!! DON'T STOP!! AAAA-MMMM-URP. OHMYGOSH!! OHMYGOSH!!"

The belly's black glow flickered as it shrank little by little under Pinkie Pie's soothing hooves. The hooves sank further as the two elders turned into more padding on Rainbow's tummy. Rainbow Dash was too distracted by the orgasmic feeling she was having to notice that her cheeks were widening slightly, and that her flank was getting softer. Before long, Rainbow had fully digested Mr. Greenhooves and Mr. Waddle. Pinkie Pie stopped when she couldn't feel anything but chub. Rainbow Dash stayed splayed out on the floor with her eyes closed and her tongue out, breathing strongly. She was sweating slightly.

"*uurrp*Aaaaaaaah.......Pinkie Pie..........That....was amazing.....*sigh*..."

Pinkie Pie had a face of pride. But, it changed to one of glee when she looked at Rainbow Dash. "*GASP* Oh my gosh, Dashie!! You look sooo cute!!"

Rainbow's eyes flapped open. She turned her head, blushed, and gave Pinkie Pie a perplexed look. "Uuuuhh....Thanks?"

Pinkie Pie nuzzled Dash's tummy. "You're so soft and cuddly now that you're all chubby wubby!"

"W-w-what?!" Rainbow Dash pushed Pinkie Pie off and tried to get back on her hooves. The floor didn't feel as hard on her belly when she rolled over. It took slightly more leg strength to lift herself up. She prodded her stomach with a fore hoof. It had more give than ever before. She poked her rump. It was soft instead of firm and stuck out a bit. She looked in a mirror on the wall and saw how noticeably fluffier she looked. She’d estimate that she gained over 30 pounds. Rainbow blushed.

“W-w-well, I guess I didn’t take the whole ‘ponies-ruining-my-figure’ thing into account......HEY!! Wait a second! How the hay did I digest those two in minutes?!”

“Silly Dashie! The black gem did it! Duh!”

“W-well, when I read up on it, I didn’t see anything saying that it would make digesting the ponies super quick! Nor did anything say that it would make me hunger for more! In fact, *GROOWL* I’m already getting hungry again! If I keep going, at this rate, I’m gonna be a blimp! Ugh! I’m loving this gem, but I’m not sure how I feel about that. Not only would I be a laughing stalk, but - if I constantly need ponies - somepony is going to eventually figure out that ponies are going missing and that I’m the cause of it!”

Pinkie Pie just giggled. “Relax, Dashie! I’m sure that there is a way to stop the gem’s curse!”
She brushed against Rainbow Dash’s side. “Besides, I don’t mind seeing a little more pudge on you. If you know what I mean.” She flittered her eyelids seductively, making Rainbow’s face turn completely red. “And, if worse comes to worst, you can just gobble up anypony that gets in your way. You’ve pretty much become a monster, Dashie!”

At this, Rainbow Dash contemplated. Normally, Rainbow Dash’s basic morality would cause her to stop doing this all together. But, after the amazing sensations that she had experienced in the past few hours, her conscious was very biased towards glutting on more victims. Whether or not she became morbidly obese or evil. Her sanity was faltering with every passing second. And, during these thoughts, the hunger got the best of her. Even if it was only one more time, she wanted another....or two.....maybe more.....Rainbow Dash started walking towards the front door.

“Pinkie Pie.......Let’s go......before you become my next meal....” Rainbow Dash’s underbelly flickered black as it growled ominously. It seemed as though she had changed at that very instant, like she was possessed. “You help me get food and belly rubs.” - She jiggled her rump. - “You get more of this growing mare.” She said seductively.

Pinkie Pie got really turned on at that moment. She was getting moist just thinking about how much bigger that plot was going to get. However, Pinkie Pie didn’t quite feel like herself at that moment either. When Rainbow Dash seduced her, she felt as if some unseen force was driving her to see to it that Rainbow Dash stay as well fed as possible. The more Pinkie Pie noticed these strange occurrences, the more she suspected them as effects of the gem. Once again, this scared her a little. But, her carnal desires were overriding that fear. It might just be her messed up mind again, after all. Nothing new to her.

“Let’s go, my rainbow piggy!” Pinkie Pie bounced merrily towards the exit with her prismatic friend, and opened the door.

Author's Note

I once said that I prefer long-term weight gain over fast-paced. However, I can enjoy it under certain contexts and a specific pacing. I hoped to emulate that, here.