Endowed and Egregious

"In other news, a small cafe in downtown Ponyville was flooded yesterday by the... emissions of what witnesses described as 'a very large griffon'. It has been ascertained that no one was hurt, but the mess is still being cleaned up."

Rainbow Dash, splayed out on her sofa and eating her morning bowl of cereal, raised her eyebrows at the news.

"Daaaaamn, Gilda."

Rainbow Dash had noticed Gilda acting a little strangely around her. They hadn't known each other for particularly long but hit it off very quickly. The relationship wasn't exactly sexual, but they both had repressed feelings for one another. This was a bigger deal for Gilda than it was for Dash - repressing feelings when you have two arm-sized dicks and balls comparable to watermelons at their smallest size meant things tended to get a little... backed up for Gilda. And fast.

But, being the headstrong griffon she was, she told herself that she shouldn't jerk off to the thought of a close friend like Rainbow Dash, she believed (not too convincingly, even to herself) that the relationship was purely platonic. She didn't want Rainbow Dash to be grossed out by two enormous, rock-hard cocks every time they met, but regardless, Gilda got hard, or at least semi-hard, if she thought long and hard enough about Rainbow Dash, let alone meeting her in person as they did fairly often. Her tightest underwear went some way toward obscuring the thickening and lengthening of her shafts when she came into contact with Rainbow, but she couldn't be fooled that easily, despite Gilda's hopes.

So, after two days of refusing to give in to her libido, she couldn't stop it from forcing its way to the surface anyhow. Had she have known how Gilda *really* felt, Rainbow Dash would have at worst laughed it off, but more than likely would just be flattered and reciprocate the feelings of desire and sexual attraction Gilda felt toward her. As it was, Gilda was a sore loser and wasn't going to be beaten out by the demands of her big, gurgling balls that had furiously demanded to blow their oversized load.

"Hm. She did seem kinda... bottled up yesterday. And the day before. Wonder if it's anything to do with me. Heh."

Rainbow Dash put two and two together. It all made sense.

"Gonna have some fun with her today."

She set out a little earlier that morning than usual for her daily meet-up at the gym with Gilda. To test if her suspicions were true, and have a little fun at the same time.

She kept her eyes peeled for Gilda when she arrived at the gym - she wanted to surprise her, so instead of heading in waited across the street. As expected, Gilda wasn't there early. She was here, like every other day, at 10am sharp - she liked to be punctual.

Fuck, she looked good. Little black spandex shorts, an enormous bulge stretching obscenely out from her crotch, and a little black spandex crop top. Still far too big for Dash to wear if she tried them on, though. She ducked to fit through the gym's seven foot-high entrance and stomped inside, Rainbow not far behind.

As usual, a few of the stallions working out perked up at Gilda's entrance and a few pairs of eyes helped her along the way to the stairs.

"Heeey Gilda! lookin' good."

"Hey chump, lookin' weedy."

The brown-coated stallion wasn't weedy by any stretch of the imagination - not to a pony at least. Just one of Gilda's claws could wrap around his toned thigh with little difficulty. Still, he shrunk at the remark, and went back dejectedly to his reps. Gilda carried on up the steps, the metal creaking as her big feet plodded up them to the first floor. Just a few seconds behind her, Rainbow dash quietly crept up the stairs and hovered at the top, peeking over the wall beside the staircase at the oversized griffon.

Gilda looked around, not too surprised that Rainbow Dash wasn't there before her. She headed over to the exercise mats for her warm-up as usual, starting off with shoulder rolls and spine twists. Dash took the opportunity while Gilda was stretching up as far as she could, head raised and looking at her outstretched arms, admiring the way her biceps rippled with each little flex she gave them.

WHAP!

Rainbow gave Gilda's big bubbly backside a good, hard smack, the sound reverberating through the gym. Gilda gasped and Rainbow was sure she heard a little moan. Gilda turned, scowling and ready to give an earful to whoever dared to - oh, it was Rainbow Dash. She raised her eyebrows, then lowered them right back down again, giving Dash a half-hearted frown, trying to feign anger when she secretly wanted her to do it again. She couldn't hide the sudden swelling at her crotch, though.

"Good morning to you too, Rainbow."

"Hey hey Ms. 'I flood cafes in my spare time', how you holdin' up?"

Gilda's beak clicked with frustration as the memories came flooding back. Of course Rainbow knew already. Fucking fuck.

"Yeah yeah, you're just jealous."

Rainbow moved in close and grabbed Gilda's big fat bulge (not the only big and fat thing on her frame), making the griffon whine through her beak, her legs turning to jelly as her engorged cock head deposited a gob of pre and made a wet patch on her shorts.

"Damn right I am. But you know what? I think this thing--"

She squeezed even harder, Gilda moaning noisily as the huge semi-hard beast in Rainbow's grip compressed slightly but pushed back against her hold as it began to awaken.

"--is the boss a' you, not the other way round. Never thought I'd find someone that could get the better of Gilda the griffon, but your little buddy here seems to have you in the palm of his hand. Well, I guess it would be 'buddies'. Never sure how many you're packing. Guess they decide that though, huh?"

Dash watched with delight as Gilda leaned back against the wall, brow furrowed and squirming from the crotch massage she was trying to ignore, desperately attempting to not blow an enormous load in her shorts as her cocks bucked and her balls gurgled.

"Nf, bull - ughnn - shit!"

Rainbow grinned.

"Oh really?"

By now Gilda's 'twins' had forced the waistband of her shorts out, exposing the bottom of her dicks. Dash just reached in and started to aggressively squeeze, rub and pump the bases of Gilda's two giant cocks with each hand.

Gilda cried out, the cry shifting into something between a roar and a growl. Rainbow Dash stumbled back as the griffon hunched over and tore her shorts open, the back of her shirt tearing open as her torso began to widen.

"Fuck! Fughnngghh... FUCK IT, I need to CUM."

The remains of her gym outfit exploded into tatters as her body surged, her hands reaching up to push against the ceiling as her head raced up toward it. Her legs, an incredible combination of muscle and fat, bulged as she fell forward. The gym shook as her knees slammed against the floor, leaving indentations beneath them. Her boobs ballooned out, pushing aside the scraps of material that hung loosely to her upper body. They engulfed her torso, billowing outward and squishing against her legs as they jiggled and wobbled uncontrollably through their rapid expansion. Rainbow, sitting on the floor, could only gawk as two nipples as big as her head ululated before her, Gilda's contorted face high above them. She was willing herself bigger, bigger, bigger. She wanted to be huge, to be fucking enormous. And she wanted to cum. To empty her overstuffed ballsack that sloshed and burbled as it spilled out from between her legs and began to creep across the floor.

"Ugh. S-shit, here we go."

A third fat cock erupted from her crotch, then a few seconds later, a fourth. Then a fifth.

"Uh, Gilda, ya might wanna calm down - unless you want to add gyms to your flooding repertoire."

Gilda bent forward, her huge tits spilling over her bouquet of cocks as she lovingly rubbed two of them, both throbbing appreciatively under her fingers.

"Haaaah... too late for that, Dashie. 'Less you want a cum bath you might wanna - ffgh - get out."

Rainbow Dash gulped. She made one step back, looking over her shoulder at all the ponies piling down the stairs. Her head snapped back as Gilda groaned, her ballsack surging again and beginning to angle her dicks upward as it propped them up. Her giant ass was pushing hard against the back wall, cracks dancing across the plaster as her butt cheeks piled on mass.

"O.. kay. I'll see you... later, I... guess?"

One of the eight-foot cocks in front of her bucked, splattering Rainbow with pre.

"Right."

She wiped her face off as she jogged for the stairs, looking over once more as she disappeared down them. Gilda was alone now.

Fuck, finally. Wouldn't stop fuckin' talking.

The griffon now had nobody to distract her. She sighed contentedly as her cocks went through another growth spurt. They exploded in size, making her cry out in bliss as a couple of the big, broad heads slammed against the far wall and punched holes through it. Her balls were so full that she was going to cum whether she pleasured herself or not, but the sensation of her dicks stretching out and rubbing across the floor was pretty fucking good anyhow.

Her pony-drawn wagon-dwarfing testes rumbled ominously.

"Ff... fuuuck!"

With a final burble and blorp, her balls contracted - hard. Hundreds of gallons of griffon jizz were pumped post-haste to her impatient steel-hard dicks. All five detonated at once, thick columns of cum erupting from the quivering monoliths, one long, solid stream. The two that had pierced the wall pumped their gigantic payloads directly onto the street below, drenching several ponies in a wave of hot, sticky spunk. Gilda could only wail as the enormous orgasm rocked her to her core, her swollen nuts depositing fresh blasts of jizz through her shafts over and over again. The room began to fill as her cocks spurted and splattered sperm every which way, the giant bird screaming in pleasure all the while.

"Oh fuck oh fuuu-nnnnhh--"

She howled as her incredibly over-developed sex organs grew again, her cocks fattening and widening, allowing even greater volumes of jizz to flow through them. Outside, ponies could only stare in awe as several more feet of staggeringly large cock meat pushed through the wall, the flow of cum redoubling and adding to the growing white pool filling the street. Despite their newfound size, they still couldn't dump the load quickly enough, the cum kept coming at an almost unbearably high pressure for Gilda.

Rainbow Dash was probably right. Right now, Gilda had lost control But she fucking loved it.

Slowly but surely, the cum cannon fusillade began to ebb. Gilda slumped forward as the last dregs of jizz dribbled out. There was a good foot of jizz sloshing around upstairs, but a great deal of it was gushing down the staircase and flooding the fround floor too. Her two wall-penetrating cock heads hung lazily, then slowly began to withdraw from sight back through the holes they had made.

A rainbow-coloured mane with white splotches peeped up from the stair case.

"Is this gonna become a habit?"

Gilda gestured to the pile of half-hard dicks between her legs.

"Maybe you should ask them."