"Oh you'll see, babe, you'll see. Now, let's get this show on the road. This first one is going to freeze your aging process. You're basically about to become immortal. See, I told you this would be pleasurable."
With that, the first needle was picked up, inserted into a vial of clear liquid, and filled to the brim. Without a single hesitation, it was then sent right into Karla's shoulder, the plunger was pushed down, and the show was on its way.
"Alright, now these next few are going to affect the pleasure centers of your brain, and the erogenous zones of your body. And for these, well, you'd best bite down on this" a small roll of leather was placed in Karla's open mouth, right before all of her clothes were removed in an instant, leaving her completely naked, showing off her firm D-cup breasts, almost flat stomach, and long almost sculpted legs, not to mention her neatly trimmed pussy. "Wow, you're even better looking than the scout had said! I can't wait to have a taste of you baby. Now brace yourself." And took a syringe in each hand and injected them into each of her breasts, just inside the small areola, pushing the plungers down.
Karla was instantly assaulted by scorching hot waves of bliss emanating from her now completely swollen and aroused nipples. Her back arched and her teeth bit down in to the leather in her mouth as her body shook and spasmed through the most powerful orgasm she'd had up to that point in her life. When she finally came down from her high, reveling in the afterglow, she noticed that this mystery woman's cock was rock hard and leaking precum at a steady pace onto the floor.
"I see you liked that, just like everyone else did, but the best is yet to come, no pun intended. By the way, I guess it's rude that we haven't introduced each other yet. Everyone calls me Kelly around here." The piece of leather was taken out of her mouth, and in between gasping breaths, Karla introduced herself as well. "Karla the Cowgirl...I like it. Now, this next part is going to blow your mind."
With that, Kelly picked up the fourth needle, already filled to the brim with a neon pink mixture of who knows what, and headed towards Karla's wet crotch. Sticking two fingers in, she began rocking her fingers expertly across her g-spot, as Karla's body began to writhe in her restraints. She was about to go over the edge once again, when Kelly stopped, peeled back the hood of her clit, stuck the needle into the side of it, and slowly began injecting its contents. Karla's eyes shot open as liquid fire exploded through her entire being. Screaming through the gag in her mouth, body shaking and shuddering like a ragdoll, she felt her body go into what felt like an endless orgasm. She could feel a warmth and tightness in her crotch that felt completely alien, and looking down saw what Kelly had meant by "no pun intended."
She was sprouting a cock of her very own! It was stretching out and up her body, pulsing lewdly with her rapid heartbeat as it grew and grew and grew. Her hips bucked erratically, not knowing the sensation of having A) a cock, and B) the building pressure of her first load. She could feel something pressing against her squirting pussy then, growing heavier by the second, and realized that she was also growing a set of what felt to be balls.
Kelly was standing back a couple of feet, face flushed with unbridled lust, both hands working her massive cock, moaning at the scene in front of her, and her own mounting need to cum. "Ooh, this is always my favorite part, baby, you're about to know pleasure like nothing else" and reached up above Karla to bring down a tube like device that was open on the bottom end with a clear hose coming out of the top. With her other hand, she pushed a button on the side of the table, leaning it forward which brought Karla to an almost standing position, her cock sticking straight out, starting to leak precum. "During you're training, you'll be able to cum freely whenever and however you want. But when we reach your new home, you won't be allowed to cum until it's time for milking. This is an extractor, and you're about to find out what it does, and how *shudder* amazing it feels." With that she slid the open end onto Karla's cock, sliding it all the way down to the base, where it sealed itself with a vacuum, while the inner workings came to life, sending Karla into overdrive.
"OOOOhhhhhhhhh AAAAAAAAAHHHHHHHHH!!!!" Rope after thick hot rope of cum shot out of Karla's new cock as the extractor hummed away with perfect efficiency brought on by almost two hundred years of improvements and revisions. Her body was soaked in sweat as orgasm after orgasm swept through her body, pussy squirting juice to run down the table, dick spraying ounce after ounce of hot sticky cum into the machine, running down the tube on the other end into the floor. Her mouth stayed open, completely slack, a look of pure delight painted on her face in a big dopey grin and slightly crossed eyes, cheeks flush with arousal.
Kelly grunted suddenly, turning to her newest acquisition, and letting out a shriek of her own, let loose a torrent of her own spunk, all over the upper body of her new cowgirl, generously spraying thick ropes across her face, neck, and tits. She walked over, putting her cock between Karla's breasts, and began tit-fucking her, sending hot cum into her open mouth, as the cowgirl grunted and shuddered through another orgasm, drinking down as much of her new masters cum as she could. With a faint click, the restraints around her arms released and she immediately took both sides of Kelly's face in her hands, bringing her in for a very hot kiss, Kelly lifting her leg up and over the extractor, straddling her, pushing their tits together. This resulted in Kelly's still rock hard cock being sandwiched between both sets of tits, where she began cumming again, spraying both of their beautiful body's in her seed. Their arms traveled all over each other, rubbing the cum in wherever it landed, swapping it between their mouths, until, with a last grunt, the extractor slid off of Karla's now limp, but still dribbling cock, to land on the floor.
Kelly stood back to admire her latest work, noticing that the shots that had been injected into her breasts were starting to go to work. When Karla would wake up in a few hours, she would discover that her already good sized tits would be much, much bigger, closer in size to Kelly's own, and would be under pressure from the milk that needed to be released. The cowgirl didn't notice any of this as she had finally passed out from the entire experience. Kelly reached down to pick up the extractor, which beforehand had been set on 'Drain' and saw that the session had lasted almost two hours, and Karla had shot close to half a gallon of her new cum. "Hmm" she thought, "after her training session tomorrow, she'll fit in perfectly." She then placed the extractor on its cleaning stand, setting it up for auto-wash, turned to the now fast asleep Karla, and effortlessly picked her up and took her to her temporary sleeping quarters, placing her on the bed.
"It's been one hell of a good day, and the next week should be even better."