The "Breeding" part of his wish comes into effect.

Sexually sated for the moment, the Saunders clean themselves up a bit, and settle down to have their picnic. From the large, heavy pack they brought with them, the couple extract a variety delicious food. Sandwiches, multiple thermoses full of soup, and more. Sitting on a rock, one not splattered with sexual fluids from their earlier fucking, Tom can't help but smile, take a bite of his sandwich, and consider just how wonderful things have been since that old man gave him the wishing coin. Sarah has settled on her equine belly on a soft patch of grass, and is eagerly tearing into her own, larger portion of food. She tells him a corny joke at that point, and he can't help but laugh, and be thankful for his life.

The couple are quite leisurely about eating their lunch, talking and joking. With the new spice of Sarah's change into a centaur, the two are enjoying all the exciting exploration of being newlyweds, and all the pleasures of being a long-time couple.

Taking another bite from his sandwich, Tom thinks as he chews, swallows, and then says, "You know, Sarah, the sex has been great since you changed. I'm glad we figured out ways for us to both enjoy it." He smiles at her, eyeing her huge breasts as she gulps down another thermos of soup.

She looks at him, a content smile on her face, before saying, "Hmm? Oh yes, I'm glad you enjoy the sex. It is rather nice, isn't it? Still, my favorite part is about to happen." At this, she reaches back and pats the belly of her horse-like lower body. She continues, "I know how much you love watching, and I think I'll be ready in a few minutes more."

Tom, slightly confused, leans to the side so he can get a better look at her equine lower body, his view partially blocked by her human upper body and huge tits. He thinks to himself, is her belly... larger? Looking and thinking, he is quite certain that, yes, the midriff of her mare body is thicker, and wider across than it was earlier. Much wider than earlier, in fact.

Finishing the last of her lunch, Sarah clambers up onto all four hooves, giving Tom a better look at her lower body. As she trots away from where their picnic is spread out, Tom gets an even better look at her much enlarged lower body, which seems distended and swollen. Then, as he watches, he sees as something presses outwards along her horse-like belly. Suddenly, he is hit with the realization that she is pregnant, and massively so. How did this happen? he thinks, how could a wish I made cause-

Abruptly, the exact words he thought when he wished on the coin earlier come back to him. Fertile, perfectly suited for breeding, and always ready to breed.

Tom realizes that, if she's always ready to breed, then she couldn't spend much actual time pregnant. His attention is pulled back to the real world, as he sees that his wife has positioned herself at the edge of the clearing they are in, and has braced her human arms against a tree. From where he is standing, slightly dazed, but increasingly aroused, he can see that Sarah is pulling at her nipples again, even as she sweeps her tail to the side. This gives him a perfect view of her centauress pussy, which is now even more swollen and wet, her massive labia seemingly unable to come back together. Looking at her huge twat, he can see that part of the reason it seems so swollen is because there is something pushing at it from inside. As he walks closer to her, Sarah lets out a low moan, causing Tom to quickly rush forward in panic, before he realizes: That was not a moan of pain, but of pleasure.

Stepping up next to his wife, Tom runs his hand along her distended mare belly. She's pregnant, and she's about to give birth, he thinks, still slightly shocked. "Dear, what do you want me to do? Anything to help," he asks her.

With another, highly sexual moan, Sarah responds, "Ahh, you know exactly what helps me with this, dear." She starts to say, "If you want to get the dil-" before breaking off, as she turns her head towards him, only to see the bulge of his erection straining his pants. She thinks for a moment, as another ripple runs through her centaur body, a contraction, before saying to him, "If you want to fuck my pussy again, you'll have to hurry." Again, her lower body ripples, and she gives him a naughty look and a wink. "Our babies will be coming along any minute now."

Tom can barely believe his ears. Not only is his centaur wife suddenly, massively pregnant, and in labor, but she wants sex during it. Quickly, he rushes back over to the rock he stood on before, the one he was standing on when he impregnated her. As he rapidly shucks his clothes, Sarah backs up to the rock for the second time that day. As he looks at her massive, lush horse ass, he can't help but shiver in anticipation, wondering what her mare cunt will feel like now. Then, his wife flips her horse tail to the side, and he gets a closer look at her huge, widely gaped, laboring pussy. With her simply standing there, her pussy occasionally twitches as more contractions run through her massively pregnant body. Almost reverently, Tom looks at her gaped cunt, wide enough open that he could put three fingers into her without touching the walls of her cunt.

Licking his lips, he speaks up, saying, "Dear, would you mind squeezing your pussy shut?"

Still softly moaning, groping at her huge breasts, and milking herself, it takes Sarah a moment to respond. "Of course, Tom," she says, before continuing, "but you really do need to hurry. Not, Hmmm! Not long now!" Even as she says this, she continues to grope her breasts and pull on her nipples, causing yet more rich milk to spray from her teats. Her pussy does tighten up though, clenching shut to the point that he could only have slipped one finger into the gaping space of her cunt lips.

Tom sets aside his worries and concerns, because this is the sexiest thing that has ever happened to him, bar none. He never thought he would get to live out any aspect of his birthing fetish, but here they were. Positioning himself and taking a hold of his dick, he thrusts forward into her huge, soaked, laboring pussy.

Yet again, he is amazed by how different her pussy is, compared to the last time he fucked her. Looser, yes, but even wetter and hotter. And the sheer kinkiness of it is amazing! Tom looks possessively at Sarah's gorgeous centaur body, with her tremendously wide hips, her huge ass, and her immensely swollen belly. She is pregnant with his children, and it feels amazing. Running his hand along her swollen centaur belly, he grins as he feels the offspring in her womb shift, which draws another pleasured moan from his wife.

Taking hold of her thick butt with both hands, he sets to really fucking her, his human hips slapping against her horse-like ass, his balls wetly smacking against her centauress pussy. Forcefully mating with his wife as Tom is, he as much hears as feels when she reaches orgasm. First, her moans get longer, and she begins squeezing her nipples even more forcefully. Then, Sarah lets out a horse-like whinny, her pussy convulsing around his dick, spraying even more femcum around where they are joined.

He lets out a moan of his own, before Sarah's pussy abruptly stops clenching around his penis, and gapes wide open. Abruptly, a quick deluge of fluid pours out of her pussy, and she whinnies in orgasm again. "Aahh! My water just broke! Our babies are coming, dear!" She says, as he looks at her in shock. She glances over the shoulder of her human torso and looks him in the eye, her face clouded with lust. "Cum in me, baby! Cum in my pussy!" she commands, before turning her attention back to her milky tits.

As her pussy clenches around him again, Tom resumes fucking her again. The strangeness and arousing nature of what is happening make him want to draw out fucking his wife more, but with her water having broken, he really is almost out of time!

Before he knows it, he feels his balls clench, his dick twitch, and then he's cumming straight into his wife's pregnant horse pussy. As he holds onto her, he feels his wife's cunt squeeze in another orgasm, pulling his seed deep into her cunt. Stepping back, he pulls his cock out of her swollen, beastly vagina and wipes the sweat from his brow. Grinning, he looks at his beautiful centaur wife, who is still moaning and convulsing. As he watches, her pussy yawns open, squeezes shut, and squirts in yet another orgasm. Meanwhile, Sarah continues to pull at her huge breasts, squeezing more milk from them onto the ground. All the while, she continues to moan his name, and begs him to fuck her, fill her, cum in her, breed her.

Abruptly, Tom realizes that his wife hadn't been getting any pleasure from the sex they were just having. She didn't even notice when he finished and pulled out of her! Still, he realizes that he doesn't mind that at all, considering that he was still indirectly responsible for the pleasure, and multiple orgasms, she is still experiencing.

His attention snaps back to her when, after her latest orgasm, she abruptly freezes, then quickly lowers her huge, round, horse-like ass closer to the ground. Another gush of fluids flows out of her equine pussy, and then her cunt begins rapidly gaping open as something starts to push its way out of her. She cries out, "Babies! Yes! Our babies are coming now! Fuck!" She canters two steps forward, lost in her pleasure, before squatting again and lustfully saying, "Pull out of me, Tom!" Still unaware that Tom had already stopped making love to her, Sarah whinnies in orgasm again, and then pushes.

Standing a few feet back, Tom looks on in amazement as the child his seed had planted in Sarah's centaur womb begins to push it's way out of her massively gaped cunt.

Huh. Well, what do you know? he thought.