“I’m still hungry,” Lyra complained.

Bonbon giggled. Nuzzling further into Lyra’s side, she smiled as she felt her marefriend’s ample body squishing beneath her weight. “Of course you are, you silly mare. You’re always hungry.”

Lyra scratched the top of her belly with a hoof while hovering a cupcake over from the table. She had a truly gargantuan gut; when she was sitting down like this, it stuck out in front of her by a good four feet. When she walked, it sagged heavily below her knees; when she was stuffed full of food, it actually dragged along the ground beneath her.

Lyra belched between bites of her cupcake, frosting matting her lips. Her chubby cheeks jiggled with her second and third chins. As she took the last bite of what had been her thirty-fourth cupcake that day (Bonbon had counted), she wiped her mouth with a flabby hoof and burped again. Rubbing her fat, bloated gut, she groaned and said, “Yeah, but this time, I’m really hungry.”

Bonbon eyed Lyra’s magnificent belly with no small amount of interest. Truth be told, ever since Lyra had confessed her predilection for sweets, Bonbon had all but dived into the process of keeping her candy-loving marefriend happily fed - and happily plump. As months had gone by, she’d seen Lyra’s weight balloon with each new dessert she shoved into her increasingly chubby cheeks. The first time she’d seen Lyra’s rump bounce and sway with her every step, she’d been completely sold on the new, heftier her. It didn’t help either that, as the thickness of Lyra’s thunder thighs and the tight rubbing of her asscheeks set her into a permanent waddle, her best part only got bigger and bigger.

That best part was, of course, her belly. It had started out with only a thin layer of fat on top of an otherwise skinny pony. Over time, though, a small mountain of sugary and fatty treats had transformed Lyra into a well-rounded beefsteak of a pony. Her giant gut wobbled like mad with even the slightest touch, and Bonbon had used it as a pillow - or, once it got big enough, a full-sized bed - more than often enough.

Bonbon had never hidden her lust for Lyra’s bountiful love handles, her low-hanging stomach, or her cute, puffed-out dimples. Yet hearing her marefriend proclaim her hunger - demand to be fed, even - just set something in her belly fluttering with delight.

“Of course, Lyra.” Bonbon rubbed Lyra’s belly softly, cuddling further into her big marefriend’s side. Lyra’s giant gut gurgled happily beneath her hoof as it worked to digest the five-thousand calorie “snack” she’d just fed it. “What’ll you have? Fudge? Toffee? A cake? I could whip up a cake easily enough.”

Lyra smacked her lips. For a moment, Bonbon saw her pupils dilate, that faraway look of hunger growing in Lyra’s gaze. As Lyra had packed on the pounds, she’d never been shy about her insatiable appetite. Bonbon was more than happy to be an accomplice to (temporarily) appeasing it.

“I dunno,” Lyra said. She groaned under her breath as Bonbon’s hoof made its way over her belly button, a giant cave in her otherwise bloated, doughy gut. Bonbon continued to knead Lyra’s massive stomach, cuddling her bigger marefriend’s flab between both her arms. Lyra licked her lips, then resituated herself, her huge flank squishing out beneath her. “Cake sounds good...but I dunno if that’ll fill me up.”

“Then I’ll make two cakes,” Bonbon promised. “Three cakes. No - four. As many as it takes to make you happy, Lyra.” She had a vision of Lyra digging her fat face into a quartet of cakes - ten layers each, stacked with frosting and absolutely groaning with chocolate. Syrup and frosting would fleck her lips and face, the massive mare snorting and grunting like a pig as she stuffed herself full. Bonbon shivered with delight.

“Still not enough,” Lyra mumbled. She patted her belly, waves of fat rippling out around her hoof. “I need something more substantial. Something bigger. Something like…”

She paused, her gaze darting around the room. Finally, her beady little eyes settled on Bonbon. It was a moment before Bonbon understood what she meant.

“A-a pony?” Bonbon stammered. “A whole pony?”

Lyra just nodded. Bonbon thought she looked mournful, but that glimmer of hunger was back in her marefriend’s eyes. As she watched, Lyra licked her lips again, and her stomach gave an absolutely monstrous rumble.

“Not - not if you don’t want to,” Lyra blurted. “I just...Bonbon, I’m so hungry. I’m not full enough. I’m not big enough.”

“And you think I can help you get there.” Bonbon couldn’t believe that she was nodding, but she did. She took a moment to consider it seriously: eaten by Lyra...but becoming a part of the pony she loved most. And even better: becoming a part of her belly, a pony’s worth of flab thickening up her rear...or her gut.

Her voice shaking slightly, Bonbon finally said, “I’ll do it. For you.”

Lyra’s eyes widened. “Really? You will?”

Bonbon smiled up at her. She slipped her hoof down the canyon between Lyra’s mammoth stomach and her chunky thunder thighs. Lyra moaned as Bonbon’s hoof ran across her more sensitive areas. “Really. I just want my marefriend to be happy.” Fat and happy.

With a bit of effort, Bonbon pushed herself up and over Lyra’s doughy belly. It spread out beneath her as she lay down on it, jiggling and rippling with all of the consistency of a waterbed. She loved how squishy Lyra felt beneath her, how she could feel every rumble and churn of her magnificent stomach as it digested every calorie of its family-sized meals.

Delicately, Bonbon reached up and gave Lyra a peck on the muzzle. Her lips were soft and flecked with frosting; she tasted sweet, and her breath was warm and sugary on Bonbon’s tongue. When she finally pulled away, both of them were smiling.

“Thank you, Bonbon,” Lyra said. Her lower lip and chins were trembling. She gave her magnificent belly a smack and chuckled as waves and counterwaves spread across its girth. “Believe me, it’s one fantastic belly you’re becoming a part of.”

“Believe me,” Bonbon murmured, running a hoof down Lyra’s flabby chest. “I know.”

She stole another kiss from Lyra. Then, pulling away, she took a deep breath and said, “So...how are you going to do this? All at once?”

Lyra nodded. Without saying another word, she lit her horn. Bonbon felt the warm embrace of Lyra’s magic curl around her before lifting her up into the air. A pony-sized indent was left in Lyra’s pillowy belly where she’d been lying, but already her doughy gut was reforming and pushing back out.

Bonbon was now hovering directly over Lyra’s muzzle. She noticed a line of drool trailing down her marefriend’s chins. She closed her eyes and smiled, happy that Lyra had become the insatiable, every-hungry marefriend she’d always fantasized about - and happy that she was about to help fulfill that hunger.

“Okay,” she said. “I’m ready.”

Lyra didn’t answer. Not verbally, at least. Instead, her horn flared a little brother, and her muzzle opened wide - so wide, in fact, that it almost seemed as though she had unhinged her jaw.

Bonbon’s hooves slipped in first, entering Lyra’s mouth at a slower, more cautious speed. Lyra tasted them for a moment, swishing her tongue along the underside of her marefriend’s legs as inch after inch of Bonbon’s body entered her waiting maw. Bonbon swallowed, then groaned as Lyra’s tongue pressed against the soft flesh of her thigh.

“Mm,” Bonbon murmured. “You like that, don’t you, you big fat mare? Eat up, my chubby little Lyra.”

The sound of her pet name only spurred Lyra on even further. Evidently finding Bonbon delicious, she gulped her legs down all the faster, Bonbon’s lower body vanishing into her gullet in the space of under fifteen seconds. As Bonbon’s hips entered Lyra’s muzzle, Lyra’s lips were forced out wide around the girth of her marefriend’s body. Her cheeks bulged obscenely around Bonbon’s heart-shaped rear as she gulped her down, inch by delicious inch.

Bonbon moaned. Lyra’s tongue was flicking against her exposed marehood, driving her puffy cheeks to further and higher arousal. Lyra had tasted her down there hundreds of times before, but somehow, this felt more personal, more intimate, more arousing, as Lyra tasted her in a manner deeper and more meaningful than any that had come before.

“A-ah,” Bonbon groaned. She panted slightly as Lyra’s mouth tightened around her waist. She could feel Lyra slurping her down. “O-oh, Lyra.”

Lyra was more than halfway done now. Her jaws worked almost tenderly around Bonbon’s torso, swallowing more of her sweet, candy-scented fur by the second. Groans of Lyra’s own filled the air, the rumbling of her gurgling gut almost deafening. It knew the size of the meal it was about to receive, and wanted all of it - now.

Bonbon kept panting. The slickness of Lyra’s throat stroked against her thighs and crotch, the velvety softness of her marefriend’s maw stimulating her in a million different ways. She groaned as Lyra swallowed her almost up to the shoulders. Lyra’s neck was bulging out around her hips; for a second, Lyra faltered, as though suddenly realizing that her meal had been a bit too ambitious. Then, casting all doubts aside, she gulped down another half-foot of Bonbon, her eyes rolling back with pleasure as she swallowed her marefriend’s shoulders.

Only Bonbon’s head was left outside of Lyra now. She could feel her hooves dangling down Lyra’s throat now, pushing out her belly. She could feel Lyra’s magnificent stomach gurgling beneath her, eager to digest her and add her to those mountains of lard. She couldn’t wait.

The stimulation of Lyra’s throat around her private parts was reaching a peak. Bonbon panted hard, her eyelashes fluttering as Lyra tenderly swallowed half of her neck. “Oh, Lyra. I - I love you.”

And then, with a gulp, Lyra swallowed the last of Bonbon. Bonbon gave a cry of pure pleasure as she vanished down into Lyra’s gullet. In her last moments of lucidity, her whole body convulsed, flexing with pure pleasure as her orgasm took her. She came - and then plopped down right into Lyra’s belly.

Lyra grunted. Her stomach surged outward, bulging out to nearly twice its original size as Bonbon filled it near to bursting. She panted slightly, her plump cheeks puffing as she struggled to hold down her oversized meal. Her belly towered above her, easily twice the size of a normal pony. If she hadn’t been on her back, her hooves doubtlessly wouldn’t have even been able to touch the ground. As it was, she felt like her titanic stomach was crushing her beneath its weight - and she loved every pound of it.

She was powerless to do anything but groan in pleasure - and fullness. Celestia, but she was finally full. Lyra let out a long, powerful belch, the vibrations of it sending every fold of her giant, flabby body jiggling. Then, as an all-encompassing sense of drowsiness overtook her, Lyra felt her eyes slowly sliding closed. She had a meal to digest, after all. She dozed off, the gurgling and sloshing of her belly lulling her to sleep.

Some hours later, Lyra finally awoke. Her massive belly groaned above her. It was still huge, but noticeably less so; she guessed that it was only around one and a half times as big as it’d been before her last meal, instead of twice that.

Belching loudly, Lyra cradled her gut in her hooves. Her ample folds squished beneath her touch, her huge, doughy gut soft and warm against her fur. Lyra giggled, then imagined that she was squishing Bonbon out beneath her, playing with her marefriend-turned-fat as she massaged and caressed her massive, fat, body.

She strained to reach up, and planted a kiss on her engorged gut. “I love you too, Bonbon,” she murmured. Then, a smile on her face, Lyra grunted and swung herself off of the bed.

The whole house shook as her doubtless quarter-ton weight struck the floor. The force of the impact sent Lyra’s whole body jiggling, huge folds of flesh and fat slapping against each other as they vibrated. Lyra felt her huge, massive body rippling and bouncing and shivered with pleasure. Oh, but this felt good.

And she felt full. Oh, Celestia, she was full. She patted her massive belly, then raised an eyebrow when she noticed that her gut was finally big enough to touch the ground. She turned around and gave her three-pony-wide flank a flex, and giggled with glee as you watched her massive cheeks bounce and jiggle.

“Looks like I’ve gotten you pretty big, Belly,” she murmured, giving her gut another pat. It gurgled appreciatively back up at her. “Though it’s gonna be pretty hard to drag you around now.”

It gurgled again. Lyra’s muzzle curled into an uneasy smile.

She might feel full, but that didn’t mean that she couldn’t eat any more. Even well and truly stuffed, Lyra wondered how much more she could take—and how big her belly would be at the end of it. She shuddered pleasurably as a familiar heat rose up in her loins, her fat stimulating and teasing her private parts better than any stallion ever could.

She licked her lips, then belched. She wondered if she could find anypony else who might be willing to feed her.