"Oh my, I'm not sure what came over me," said the woman, getting up from her knees.
The woman had a bit of a southern belle accent and smiled back. "I think yer beautiful. What's yer name?"
Joan wondered how far she was from home, but judging from her accent, she felt like it was pretty far. Somewhere in the deep south.
"Joan. And I think you're pretty sexy yourself." Smiled Joan. This was the first time someone had appreciated her new form and it never dawned on her that someone might find her unconventional appearance attractive.
"I'm Jane. So I guess I won the auction, does that mean I've won some more time with you?" she said with a smile.
"I'd like that very much." Joan said with a wink. "I think I should get cleaned up though. I smell like an animal." she said, turning her rear to Jane. She stuck out her butt which did nothing to lessen the appearance of the huge mound of poop still in her panties.
"Don't you dare." said Jane, and gave Joan's ass a smack. "I'm not done playing yet."
Joan looked back at her with a strange expression. "Let's say I've got some unusual kinks." she said.
"C'mon this way." Jane said, motioning with her index finger. She went up the Joan and whispered in her ear. "I'm so wet right now. I want your huge cock inside me."
She took Joan's wrist and pulled her backstage, the door slamming shut behind them.
"Jane, what--" she began to say, but her question was cut off by Jane's mouth pressing against hers. Delighted, Joan eagerly stuck her tongue into Jane's mouth, and she began to hike her skirt up around her waist.
With her free hands Jane quickly undressed the rest of the way, losing her shirt and ensuring to continue her lips locked with Joan's.
Joan's four large breasts dwarfed Jane's even though they weren't that small. Her massive cleavage spilled out every which way from between their bodies.
Sliding her hands into the back of Jane's panties, Joan squeezed and caressed her big, juicy butt while exploring her mouth with her tongue.
"Joan..." she whimpered, in between kissing. "Don't, mhhh... stop."
Joan began nibbling her ear. This was Jane's sweet spot and made her insanely horny.
"Oh yes, Joan, fuck me!" she pleaded, pulling Joan close and grabbing her engorged member. She wrapped one of her legs around Joan as her back rested on the wall.
She pulled the gusset of her damp panties to the side, exposing her sopping wet pussy. Lost in the heat of the moment, Jane didn't realize that her pussy had expanded, with her opening now able to take Joan's member in its entirety.
Inch after inch of Joan's massive cock disappeared inside Jane, and Jane's whole body shook as Joan thrust into her with vigor. Jane's tits bounced with each of Joan's thrusts and began to get larger by the moment. Joan watched in satisfaction as she unwillingly but happily began to change her new mate to look more like her.
As Jane got the shagging of her life she stroked her two round tits and watched them grow until they were four times their original size, hanging down to her navel. Her small dainty pink nipples grew longer and darker and until they were as dark as the shaggy black hair that was now covering her previously smooth legs. Her cute, pedicured painted toes merged into two black hard toes.
Jane moaned as she felt her round, feminine butt get even larger, pulling her panties into her butt crack. It now resembled a thong on her vastly enlarged ass which now sported a shaggy tail, which writhed down between her legs as it completed its growth.
The horniness and desire welling up in her mind made her new twelve-inch tail wiggle instinctively as Joan continued her assault on Jane's pussy, which was also covered with a black shaggy fur, and a clit the size of a wine cork.
Jane grabbed Joan's ass, pulling her closer as she mashed her poop all over her ass. Some of the poop pushed out the top of the panties, but most of it came out the leg openings and plopped on to the floor.
Two pointed horns sprouted from the peak of Jane's forehead and stretched back toward her ears, which were covered in black fuzz and grew longer until they stuck out from either side of her head.
Jane's transformation was complete, she was ready to join the herd as Joan's new mate. She cried out in orgasm as Joan shot her load deep into Jane's wanting pussy.
Jane ran her hands through Joan's hair, whispering in her ear, "that was the best sex I ever had."
As Joan dismounted her, Jane's final change took place as her butt heaved out, pushing further and further from her body, finally tearing her panties off as they fell to the ground.
"Oh my... W-what's happening?" Jane said, struggling to keep her footing.
A second set of legs appeared, and grew longer and longer until they touched the floor. They resembled her front legs, human feet with two hard toes at the ends.
Jane yelped, as her body contorted, taking its new shape. The space between began to take the shape of a second torso, quickly being covered with the same shaggy black fur that covered her original pair of legs.
A patch between her rear legs close to her crotch remained hairless, where two large breasts appeared, rapidly expanding until they forced her legs apart, each adorned with two long, dark nipples the size of the roll of quarters. They stopped growing when were the same size as her upper breasts.
Her tail swayed about her enlarged ass as her new udders dripped with creamy milk. "A centaur?" she said, holding her sides and surveying herself in front of one of the mirrors.
"Not exactly, but close." Joan said with smiling satisfaction. "How do you feel?"
"Amazin'!" she said, shifting around so Joan could see her hind side. A sloshing sound could also be heard from her breasts and udders as she turned. "And I think my new titties could sure use a milkin."