Image(s) that inspired this clopfic...are actually stories, not images.
I suppose this is a spiritual sequel to both of the Zecora stories from before. Felt like writing some fat-bottomed zebra, and it seemed to fit perfectly with those.
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During the few days following Zecora's secret congregation with Big Macintosh, the zebra had gotten quite busy with her alchemy, working on various brews for all sorts of lewd fun. Working off of her previous growth potion, she formulated a new brew that would have a similar effect; one she was sure Big Macintosh would thoroughly enjoy.

"Mm, yes, this will do quite well, I'm sure." Zecora thought out loud with a grin, dropping one last ingredient into her lightly-bubbling cauldron and continuing to stir it gently, inhaling the pleasant scent it was giving off. Her ears perked up however as she heard the creaky wooden door behind her opening; turning her head to the side to see her adoring stallion entering. "Welcome back, Big Macintosh, my dear."

"Heh, hope I'm not too late..." Big Macintosh grinned a bit as he closed the door behind him, stepping up to the zebra and glancing down at her cauldron. "What kinda stuff are you making today?"

"If all goes well, this brew should create a wonderful effect for both of us." Zecora gave the stallion a playful grin as she continued to stir the mixture, slowly pulling the large wooden spoon out a couple moments later. "Even lovelier than my previous potion."

Raising an eyebrow, Big Macintosh smirked a bit as well, crossing his arms over his chest. "Must be somethin' really good if it makes you say that." he teased, watching the curvy zebra as she scooped a ladle into the liquid and poured it out into a small jar.

"Of course it is, my dear. I took a very fun potion I made a while ago, and adjusted the recipe just a bit." Zecora licked her lips as she gazed at the liquid-filled jar in the hands, inhaling the sweet aroma once more. With that, she brought the jar to her lips and tipped it back, gulping down the entire jar in a few moments. "Ahh...mm...quite an improvement over the last, already." she giggled softly and licked her lips, setting the little jar back down.

"So...what does it do?" Big Macintosh tilted his head to the side a bit, watching the zebra intently for any changes, though he didn't seem to notice anything different about Zecora.

"You will see, my eager stallion." Zecora giggled again and gently stroked a finger under Big Macintosh's chin, midclosing her eyes and smirking playfully. "Allow me to wash up while the potion takes effect." she added, before turning and walking over to the makeshift sink behind her; Big Macintosh getting a clear view of her entire backside now, due to the apron only covering her front.

Of course, the big stallion couldn't help but gaze at Zecora's plump rear, his head already full of rather naughty thoughts of what the potion might do. Just as the zebra started to pour a jar of fresh water over her hands though, he began to notice the already sizable rear in front of him begin to swell even bigger. "What the..." his eyes widened at the sight; not believing what he was seeing for a moment, though as the size difference became more and more noticeable, he quickly realized what the effect of the zebra's brew was.

As she finished washing her hands, Zecora turned her head to the side, glancing back over her shoulder at the stallion and smirking a bit as she noticed the surprised look on his face. "Mm, now do you see?" she teased, lightly wiggling her hips just enough to cause her fattening rump to jiggle. "I previously mixed a growth potion with a similar effect to this...with a bit of experimentation, I have learned how to concentrate its effect to specific regions of the body." she explained, blushing lightly now as her hips began to swell outward as well to match her fattening butt.

"Y-Yeah..." Big Macintosh barely understood the zebra; too focused on staring on her growing rear as it continued to plump up bigger and bigger, beyond the size of anything he had seen before. "It's...working really well...isn't it?" he gulped softly, already starting to pitch a sizable tent in his pants, much to the amusement of Zecora.

"Hehe, yes it is...this brew is quite potent, can't you tell?" Zecora then reached a hand behind herself and raised it a bit, only to bring it down with a bit of force, spanking her now massive rump and lightly groaning from the resulting tingles of pleasure; her rump jiggling perfectly before Big Macintosh's eyes, finally stopping its growth at roughly three times its previous size, along with what had to be the widest hips in Equestria. "Come, have a feel for yourself."

Big Macintosh eagerly complied with the zebra's command, stepping right up behind her and reaching both hands forward, gently pressing them against two massive grey cheeks before him and feeling them squish like dough in his hands. "M-mother of Celestia..." he bit his lip, feeling his arousal spike up even higher as his hands felt around Zecora's overgrown rump; a wet spot forming at the tip of that tent in his pants as his member throbbed wildly.

"Do not be shy now, my dear...this zebra will not be satisfied with just gentle rubbing and squeezing." Zecora teased in a noticeably more sensual tone; her own arousal steadily increasing from the feeling of those big stallion hands exploring her fat rear. "I know you're stronger than this, Big Macintosh. Show your zebra how rough you can be!"

"If you insist..." Big Macintosh nodded softly, groaning lightly as the tightness in his pants was starting to become slightly painful. Moving on from light rubbing, he began to squeeze and knead the gigantic buttcheeks, squishing them together and really pressing his hands against them, causing Zecora to lightly moan and squirm a bit. "It's so soft...are you sure this isn't some kind of magic-influenced dream?"

"Ahhh...this is no dream...mm...let me show you." Zecora smirked back at the stallion again before pressing her hips back, pressing her massive butt against the tent in his pants, causing him to gasp and groan lustfully. "I'm sure your little friend in there would love to have a feel for himself. Why don't you let him out?" she teased, lightly wiggling her rear against Big Macintosh's crotch a couple times to tease him further, before pulling herself forward again.

"Heh...of course." Big Macintosh sighed happily as he finally undid his pants and let them down, freeing his extremely stiff member from the painful tightness. Not wasting a single moment, he grasped Zecora's plump rear again and moved his own hips forward, gently pressing his cock between the soft cheeks and sighing even more blissfully than before; now feeling the immense softness of that giant zebra rump squishing around his throbbing length. “Mmnh, this is even better...than a dream!"

Feeling that rock-hard shaft between her soft cheeks only aroused Zecora further; her own sex considerably moist already, giving off quite a lovely scent for the lusty stallion. "That's it, my dear...enjoy this fat zebra butt." she teased, pressing back against the stallion again to help sandwich his shaft within the massive softness.

"I...ngh...will!" Big Macintosh grunted with lust, pressing his hands at the sides of the zebra's huge rear as his hips began to instinctively buck, thrusting his member back and forth between the two soft cheeks. The feeling was incredible, much better than any tit-fuck he had ever received; his thrusting quickly working up to a rapid pace while precum began to ooze forth already, smearing between those two giant cheeks. "Mmnh, y-you weren't kidding...when you said it would be wonderful!"

"Of course...Zecora always takes her potions seriously." Zecora sighed blissfully from the feeling of that big stallionhood sliding back and forth against her soft rear, feeling the warmth of the precum spreading between the two giant cheeks. "And it seems her work has really paid off!"

"Ahh...y-you're darn right is has..." Big Macintosh smirked and raised his right hand up from the zebra's plump rear, only to bring it back down again, smacking it against the spiral design on Zecora's flank, causing her to moan lustily while her swollen rump jiggled quite a bit in response to the firm smack. "This feels better...mmnh, than any boob job...I've ever gotten!" he teased, thrusting his hips a bit more quickly now, finding it easier to thrust between those giant cheeks with the slight lubrication of his precum.

"I'm very glad...hehe, that you're very glad!" Zecora giggled lightly, her cheeks blushing from the compliments, though her mind quickly returned to the lustful thoughts that the stallion's humping provided her. With one hand grasping the edge of the sink, her other hand slipped down between her fat thighs and to her sex, which was dripping wet at this point; her index and middle finger pressing together before rubbing over the moist pink slit, providing her with some lovely pleasure of her own.

"Speaking of boob jobs..." the lustful stallion spoke as he suddenly leaned forward, sliding both of his hands up and around Zecora's body, grasping at the two decently-sized melons on her chest. "Ya figure you can make a potion that affects these too?" he teased, grunting lightly now as he had to put a bit more effort into thrusting, his hot breath washing over the zebra's neck, only causing her blush to deepen further.

"Mmnh, of course...my darling..." Zecora closed her eyes now as she felt her cheeks warming up, panting lightly herself from the growing pleasure between her thighs; her fingers rubbing up and down her moist slit a few more times, before they moved all the way up to the swollen nub at the top, squeezing it between her fingers and groaning deeply from the resulting jolts of pleasure. "I could...ahh...experiment with my brews some more..."

"Good...mngh...because I'd love to see these lovely melons grow just as big!" Big Macintosh groaned, accelerating his thrusts even further still as he felt that familiar pressure building up in his loins; loads more precum escaping his member now, soaking even more between the zebra's fat cheeks. "Ahh...gonna cum...Zecora...!"

As Zecora felt the stallionhood throbbing harder between her soft buttcheeks, she could also feel that her own orgasm was not too far off; her fingers continuing to squeeze and rub her sensitive love nub in circles. "Oh yes...cum for Zecora...my lustful stallion..." she panted, trying her best to press her hips back against Big Macintosh's crotch, eager to bring him to a powerful orgasm.

"Nngh...c-cumming...!" Big Macintosh groaned out loudly, firmly thrusting against that giant rump as he felt the pressure begin to release; thick spurts of seed gushing forth from his cock and splattering Zecora's lower back and the top of her rear, though after only a couple spurts, the big stallion pulled back and immediately grasped his twitching shaft, jerking it rapidly and gushing the rest of his load all over the zebra's overgrown rear, splattering the two giant gray mounds with streaks of white.

The feeling of the steamy seed splashing all over her backside only helped in bringing Zecora's orgasm on; her fingers squeezing her clit firmly as she let out a blissful cry, feeling the torrent of hot carnal juices splashing over her fingers and splattering onto the floor below her.

"Haahh....mmmnh...sweet Celestia..." Big Macintosh panted heavily as his afterglow kicked in rather quickly, leaving his eyes lidded as he gazed down at the sticky white mess he had made all over Zecora's rear and lower back.

"Mmm, quite a lovely feeling..." Zecora slowly opened her eyes again as she turned her head to the side, glancing back at the stallion, still blushing lightly. "I can see that my big stallion really enjoyed himself." she teased, lightly wiggling her hips, causing her gigantic rump to lightly jiggle before the stallion's eyes.

"More than enjoyed, heh." Big Macintosh smirked playfully now, watching the cum-splattered zebra butt wobble and jiggle in front of him; his member still lightly throbbing in his afterglow. "I haven't felt anything that soft in all my life!"

"Then I suppose my brew was a success." Zecora giggled softly as she turned around and embraced the stallion, her soft chest squishing against his pecs from the close cuddling. "I shall get right to work on my next brew, per your request, my dear." she teased with a wink, pressing her chest a little more firmly against Big Macintosh's and feeling the stallion's member lightly throb in response, pressing between her huge thighs.

"Mnh, of course..." Big Macintosh grinned playfully, wrapping his arms around the buxom zebra in return, his hands sliding down to her waist and lightly squeezing at her plump thighs. "I can't wait to see what this big zebra cooks up next." he leaned his head down a bit and gently nuzzled Zecora's snout, staring into her eyes as he got a playful grin in return.

"How does tomorrow sound then, hm?" Zecora's grin curled into a smirk as one of her hands slid down Big Macintosh's body, lightly squeezing at his member to tease him back. "I should have what you need brewed up by then."

With a soft groan, Big Macintosh nodded, gently pressing his hips forward as the zebra's soft hand gently stroked his shaft, preventing it from softening for the moment. "Sounds good to me...mmnh, see you tomorrow then, ya horny zebra." he teased with a chuckle, gently pecking Zecora's snout before bringing his arms back from around her and stepping back, exiting through the hut's front door.

TO BE CONTINUED, for once. For real. No foolin'.