“Happy Pie Sisters’ Surprise Swap Day.”
Pinkie’s eyes blinked sleepily open. “Happy—bwuh?”
Something firm pressed against the chubby flesh of her crotch—and then slid upward, squeezing, around a certain protrusion from her groin. Pinkie shuddered in half-asleep pleasure. “O-ooooh.”
As she blinked away sleep, the world resolved around her—as did a tall, busty mare kneeling at the side of her bed. Maud Pie cocked her head toward her little sister, and gave the great bulge in Pinkie’s pajamas another thorough squeeze.
“I wanted to provide you with a good surprise swap,” Maud intoned. Her thumb slipped efficiently around the cotton-covered length of Pinkie’s stone-stiff shaft; Pinkie cooed, shivering happily as her morning wood throbbed against Maud’s firm palm. “I hope this is acceptable.”
“It’s—nngh”—Pinkie sucked in a breath—“w-wonderful.” She exhaled, her shoulders wriggling as Maud’s closed fist reached the top of her erection. Briefly, Pinkie wondered if her sister was going through another one of her "study of petrified morning wood phases," but found that she couldn't bring herself to be concerned.
Maud paused, lingering atop a cotton-stitched trio of balloons. Then, giving Pinkie’s flare another quick squeeze, began to slide her tight fingers back down. Pinkie's eyes crossed and her tail began to try to spin against the bed. Maud's strength and suppleness made her handjobs superriffic!
“That is good,” Maud said. She frowned; Pinkie’s pajama-bulge had been large before, but it was rapidly swelling even larger. When Pinkie had woken up, the pink pillar in her pants had been more than a half-foot in length. Now, though, it was easily as long as Maud’s forearm, and thicker, too.
“It would appear,” Maud said, taking Pinkie’s shaft in both fists, “that you are quite prepared for today’s festivities.” There was a slight curve to Maud's lips, just a tiny slip at the edges. If Pinkie hadn't been so focused by the pleasure pulsing out of her marecock, she'd have been impressed by just how much Maud was getting into this! Her little finger massaged the visible bulge of Pinkie’s medial ring even as her two hands together smooshed and squeezed the thick, supple flesh of her sister’s burgeoning erection.
“O-oh, yeeees.” Pinkie squealed softly, her eyes rolling back against her forehead. Panting, Pinkie squirmed against the bed, against Maud, against - confinement. She moved forward toward the hem of her pajama pants—and Maud’s eyes snapped toward her.
“No,” Maud said, simply.
“But they’re so tight,” Pinkie whimpered.
Maud didn’t reply. She only tilted her head to the side, and offered a small, secretive smile. Very briefly, Pinkie saw Maud's world in that tiny smile.
And then Pinkie groaned - and then gasped. Her whole body seemed to be contracting into the footlong mountain protruding from her crotch, her belly burning and her thighs flexing with need. When she peeked beneath one eyelid, she saw Maud squeezing her morning wood tightly—so tightly, in fact, that Maud’s knuckles were trembling.
Pinkie’s bulge flexed—and then convulsed. A fat stain dampened the top of her overstretched PJs, right against the face of a smiling blue balloon decorating the colorful cotton. Pinkie whimpered again, and felt her knees knock together while her plush rump started to twitch-a-twitch.
That, of course, was the sign that there was going to be a mess! Pinkie was pretty sure she knew where from, too. Her fat, cream-filled balls, unemptied since she’d gone to sleep, began to swell with seed—by now, they were smooshed tightly against the insides of her thighs.
Maud, though, didn’t so much as flinch. Instead, she simply began to push her iron grip up the length of Pinkie’s morning wood, inch by girthy, meaty inch. Pinkie panted helplessly, a line of drool slipping down her cheek, as Maud’s firm fingers smooshed the soft, comfy fabric against her throbbing length. Each swirl of Maud’s talented thumb brought another yearning throb from Pinkie’s crotch, another swift-spreading splotch of dampness staining the cotton of her PJs. The smell of hot, virile precum filled the air, and Pinkie’s nostrils twitched. She felt her tummy groan with emptiness.
“Does this please you?” Maud said.
“I—“ Pinkie squealed in unrestrained pleasure as Maud retightened her grip. With a sudden corkscrew of her grip, Maud twisted her wrist forward, grinding her closed palm against the soft, pre-drenched fabric of her sister’s pajamas. Pinkie couldn’t help but moan; whimpers were just too quiet for this kind of Secret Sister Swap moment. Her hips tensed, her thighs tensed, her cock throbbed—but Maud held on with the stubbornness of a mountain, stroke after stroke.
Up and down. Clockwise and counterclockwise. There were no words—there didn’t need to be. Pinkie all but melted around the incredible tightness of her big sister’s handjob. Her tongue lolled out of her mouth, her occasional pants and whimpers of pleasure met only by the gentle squelch of her stained pajamas against her engorged wood.
“Am I getting closer?” Maud asked.
Pinkie groaned. Her hips pushed forward—but Maud’s potent bicep, sculpted by years of rock-farming, bulged against Pinkie's own strength, keeping her easily in place. Eyes crossing in sheer sensation again, Pinkie tried to answer, and found herself helpless in Maud's grip. Again. She tried to focus, to find out how to answer.
“T-to what?”
“To achieving orgasm.”
"Oh-h-h…" Pinkie’s waist twisted. Her cock throbbed; a massive bead of precum, as wide as her thumb, seeped through the top of her overstretched pants. She whimpered, and then leaned forward until her melon-sized breasts were nearly wrapped around her shaft, with the pre-streaked bulge mere inches away from her salivating muzzle.
It was going to be hard… It was going to be very difficult to even match Maud's gift again this year.
Maud didn’t even have to remove her hands. She merely knocked Pinkie on the forehead with the side of her skull—and Pinkie grunted, toppling back against her pillows. Just a gentle little tap, by Pie Sister Standards. Maud nodded in evident satisfaction, and returned to her task of massaging, squeezing, and stroking Pinkie’s mountainous bulge.
“Y-yeeeees,” Pinkie groaned. Her thighs flexed; her poor balls were just too big for her pajamas now! She wanted—no needed to cum. They were starting to stretch out the cotton fabric even more; their musk and sweat were deforming the pants easily, the fabric creaking and straining outward with each inch in diameter Pinkie’s sloshing nuts expanded. “S-soooo full—“
She took a deep breath, thrust forward—and found her cock squeezed, terribly, impossibly tight between Maud’s strong fingers. Tears came to Pinkie’s eyes, her lower lip wobbling at her sister, and her eyes bulged as she felt her nuts swell even further.
“I have been studying the science of pleasure,” Maud intoned. “Your penis is extremely hard. Like a rock.” She seemed rather pleased by this accomplishment; her sister was too focused to cheer properly.
Or perhaps she was properly applauding, after all. Pinkie whimpered; the base of her shaft was beginning to bulge girthily as her balls churned with a need to release their seed. “I presume that to be a good sign.” Pinkie’s tight pajamas strained as her balloon-sized asscheeks clenched and squirmed, her entire body tensing as she fought to try and climax past the tightness of Maud’s fist.
“P-please,” Pinkie whimpered. “M-maudie. I need—I need—“
Maud blinked down at her. “What do you need?” Her deep eyes focused hard on her sister, boring into her and demanding only strictest, sisterly truth!
Or dirty talk. Pinkie knew that both would be best, of course.
Pinkie’s voice was almost a whisper. “I need to cu-u-u-uuuum.”
“Then,” Maud said, polishing the top of Pinkie’s knob with one firm palm, “you should cum.” She tilted her head again, nodded, and released her grip.
And Pinkie came.
Her hips bucked forward—and this time, Maud allowed it. The mattress shook, the entire bed trembling with each slam of Pinkie’s generous rump down against it. Pinkie squealed, her high-pitched moans filling the air of their small bedroom as rope after rope of thick, gooey cum shot through the fabric of her Party Pony PJs. Her balls contracted against her groin, their voluminous contents churning as they forced load after load of hot, heavy spooge through the tight-woven cotton.
Maud didn’t really remove her hands, though—not at all, in fact. Instead, she merely continued to squeeze, starting her tight-closed fists at the base of her little sister’s girthy shaft and running them upward with each swelling bulge of cum erupting from Pinkie’s erection.
"Volcanic," breathed Maud calmly. Pinkie would have been honored by the superlative, but she was busy at the time.
Finally, sloshing balls exhausted, and fat globs of spunk covering her from bust to forehead, Pinkie fell limp. She groaned happily, letting the afterglow of her climax spread through her body.
“I assume you enjoyed that?” Maud said.
Pinkie nodded—and then jumped forward, catching her cock between her cleavage and latching her muzzle onto the cum-drenched pillar of her once-morning wood. Moaning and cooing delightedly, she suckled on her spunk-stained pajamas like a popsicle, her lips tightly wrapped around it like a foal sucking at its mother’s teat. Gulping down mouthful after mouthful of dripping cum, Pinkie squirmed happily as streaks of her own jizz continued to streak down her cheeks.
Maud nodded in return, and slowly stood up. By the time she got to her feet, though, she found herself face-to-cock with yet another massive, towering erection. She blinked, and adjusted her gaze upward. A droplet of precum splattered atop her forehead, the musk of it making her nostrils flare as it oozed lazily down her cheek.
A red-cheeked Marble Pie smiled nervously down at her. Her top bunk creaked as she shifted her weight toward the side. From here, Maud could already make out the grapefruit-sized orbs of Marble’s tremendous nuts pushing up past the hem of her clean white nightgown. Each throb of the monstrous organ filled the room with a fresh scent of virility and sex.
Marble giggled softly. Blushing, she met her big sister’s eyes and smiled. “Um,” she said. “Would you mind, um, giving me that kind of swap too?”
