Emma walks right over and pushes Jeff backwards onto their bed. She then proceeds to run her stallion cock in between his 6 breasts. Jeff as if by instinct, already knows what she wants from him and starts giving her a triple tittyfuck. Feeling Emma's warm and hard shaft running in-between his 6 breasts is pleasurable enough, but feeling her massive balls slap against his own dick and ass cheeks as she does this is icing on the cake.
Jeff has to use both arms to push all of his boobs together for Emma, so he is currently completely defenseless to her own doings. Emma knows this and takes full advantage of it too by toying with the dildo in his pussy, pumping it in and out of him with force. Jeff feels himself thrashing with pleasure, but still manages to keep the tittyfuck going to the best he can. It seems to be more than enough though as soon after they start, Emma commands Jeff to open his mouth up wide, which he does. She then shoves her flared gland up against his lips and shoots her cum directly into his mouth, filling it completely with just the fist pump, then shoving it down his throat with the rest.
After forcefully being made to swallow over what felt like a gallon of horse jizz, Jeff is finally able to catch his breath, though it still all tastes and smells like horse cum. He doesn't mind that though, as his new sense of reasoning now finds horse cum to be very appealing. Jeff proceeds to clean off his girlfriend's equine rod with his tongue, slowly savoring what is left over for as long as he can. His own cock still remains flaccid however, as his sex life from now on will almost never allow for him to use it. There just isn't a need as his girlfriend has a much better dick than he has, but his pussy is leagues better than hers, and he knows it better than anyone.
Still not fully satisfied, Jeff gets on his knees and sticks out his ass towards Emma, giving himself a playful spank and bobbing the tail plug in his pussy up and down playfully for her. Emma knows fully well what he wants, but as she has just blow her load, she still needs a bit of a break before round whatever this now is. "You just cannot get enough of my cock, can you?" she jokes as she spanks Jeff's ass.
"I can't help it, my pussy loves being filled 24/7 you know. And while the dildo plug you gave me is amazing, it still is incomparable to the real deal" Jeff explains, now pulling out the nearly 2 feet of rubber from his pussy. Even Emma takes a second glance at its size with an impressed expression on her face. The dildo alone is about the thickness of a can of pop, but it is so long as well that it had to have been going up so far inside of him that it was reaching his upper torso. Jeff then winks his pussy at her, hoping his leathery black folds entice her enough to fuck him.
That normally wouldn't have worked on Emma, but the smell wafting from it took her over the edge. Jeff was a mare in heat, her mare in heat. And as the stallion, how could she just leave her mare this unsatisfied? Be it a sense of duty or pure lust, Emma found the drive to go again right away and plunged her cock right up Jeff's pussy, causing him to squeal in bliss as his organs were all pushed aside by the shaft of Emma's cock pushing in as deep as possible up his torso. This felt amazing and a little painful at first, but once the initial shock wore off, Jeff was in heaven.
With a torso full of horse cock, there was little Jeff could do in terms of movement. Emma on the other hand, had full range still and took full advantage of it. She leaned down and began pinching and squeezing Jeff's breasts while pressing her own into his back. Feeling his own breasts being toyed with and being completely unable to do anything but let it happen, as his hands were stuck holding the both of them up, was such a unique experience for Jeff. And yet he still did what she wanted when she grabbed a pair of special gloves from one of the drawers behind them, and told him to put them on.
The gloves, like his current footwear, were custom made to end in a horse hoof. Jeff stuck both hands into them, and Emma pulled them up for him, as he no longer could do it himself with a pair of horse hooves for hands. The gloves were fixed into place by a strap that connected them together that wrapped around Jeff's back. Emma also shoved his head into a harness and a bit into his mouth and grabbed the reins. She then pulled his head up by the reins as she resumed her pounding of his pussy with added vigor.
"Hehe, you must really love it when I turn you into a mare huh Jeff. I can tell because after I do all of this, your pussy only grows tighter and you clamp down even more so too" Says Emma. Jeff knew she was right, he was already loving this before and now with this getup, he is getting even more turning on somehow. Jeff begins cumming again and again, spraying his juices all over as Emma thrusts take on even more strength. Each push into him shoves his cum out with an equal amount of force, splattering it all against Emma's balls and thighs, as well as the floor behind her.
It is then that Emma cums unexpectedly, filling up both of Jeff's wombs with her seed. Jeff bellows in a lustful bliss as he feels himself being filled with her hot semen. His lust drunken mind not yet realizing the significance of what she's just done to him. Emma however has immediately realized it and quickly shoves herself back away from Jeff with fear. "Shit!" she shouts, while Jeff looks back out of concern as to why she suddenly stopped mid orgasm. He then feels her seed dripping out of him and it dawns on him what just happened. "Oh fuck..." Jeff mutters to himself after Emma removes the harness and bit from him.
Jeff now is sitting next to Emma on the bed, still in the gloves though. He for some reason liked being in them enough to as Emma not to remove them just yet. "Jeff, I didn't mean to..." begins Emma, but is silenced when a hoof is pressed to her lips. Jeff looks at her and grins. "None of that. All that matters now is do you want them to call you Mommy or Daddy? I am leaning towards Mommy myself, as they will eventually be coming out from my pair of wombs after all."
The reason why Jeff isn't too upset by this is simply due to the Chronivac. While he cannot undo this or make any change that would effect his pregnancy negatively, he can delay it, rapidly speed it up, etc... So it isn't nearly as bad as it could be. Plus, and this may just be his body's reaction to being impregnated, but he is feeling more and more excited to have them. And because of this new addition, Jeff already made a change to his body already. Since eventually he will be unable to wear his dildo inside of him 24/7 for a time, he added a fully functional, real horse tail to himself in the proper place. He also plans on using the Chronivac to make things better for them, but isn't sure how to tell Emma about all of it yet, as she will instantly realize what he has done to the world if he tells her.