Content: TG/TF, mind stuff, suggestive.

“Darling?” one of the two asked, looking around the alley as her hair finished curling into the pre-programmed shape.
“Darling darling,” the other replied, grabbing her counterpart by the shoulder and drawing her attention to their assailant.
Actually, he preferred to think of himself as their new caretaker. They wouldn’t need to scrounge for food anymore, and his nanite gas had already eliminated any existing substance addictions either of them might have had when it was rewiring their neurology. They should definitely be grateful he found them and was about to give them a new life!
They didn’t look all that grateful, though. Kind of scared, really.
“Don’t worry, I’m here to help,” he said, tucking the gas dispenser into his waistband and holding up his empty hands as he approached the two transformed beauties. He let his eyes wander up their shapely white legs, noted appreciatively how his randomization routine had given their clothing different but compatible patterns, deemed his figure-alteration routine a success when he saw that their frames were mostly rail-thin except in exactly the right places, and judged their height to be dead-on at a mere five feet to the tips of their ears. And this was just the first field test! He couldn’t wait to start “mass producing” more of these gorgeous babes and live with his fantasy pony harem.
Well, he had the physical details all hammered now. Now it was time to test the mental changes and make sure everything had worked. “My name’s Steve, what are your names?”
“D-darling darling Rarity,” the busty unicorn with the more colorful sweater-dress said. “Darling dar- …” she was about to introduce her counterpart when she suddenly looked confused. “Darling? Darlingdarlingdarling!”
‘Dar-ling Rarity?” the one in the two-tone sweater-dress asked before realizing she too was just saying ‘darling’ and her counterpart’s name. “Darling! Darlingdarling! Darling?” She looked down at herself for the first time and her cute face took on an expression of abject shock. “D-d-d-darling!?”
“Hey hey, don’t worry about it,” Steve said as he closed in, papering over the excitement in his voice with a soothing demeanor. “So you’re both named Rarity, eh? And all you can say is your name and ‘darling?’ Okay, how about family? Friends? You two live around here?” he asked, knowing what their reply would be.
“Darling,” the rainbow-sherbet sweater-clad unicorn said sharply. “Darling darling,” she pointed at her face, then pointed at the other girl’s, “darling DARLING darling, darling darling!” Her compatriot just watched the two of them face off bashfully from the sideline.
“Yeah yeah, whatever,” Steve said dismissively. “Ahem. You have lovely eyes.”
The inarticulate woman’s mouth hung slack in surprise. “… darling?”
“Oh yes, quite. And your hair is so beautiful.” That staggered her, robbing her of any trace of anger from before. She blinked and felt her cheek with the palm of one hand, then looked to her side at her double in the yellow and purple striped sweater dress.
“Oh, both of you are just gorgeous,” Steve said, laying it on thick just for fun. “A couple of cuties for sure. So adorable… and attractive!” He watched the two of them react to his compliments in what, to anyone else, would have been a completely unexpected way. They swayed as if physically rocked by his words, eyes fluttering and blush spreading from cheek to shoulder, their bodies relaxing and tensions melting away under the barrage of praise. His programming took flattery, no matter how sincere or superficial, and used it to fuel arousal. He decided to stoke their furnaces a little more.
“Why, you two are certainly lookers, but I can tell you’re more than just a couple of pretty faces,” he said, stepping between them and meeting no resistance as he lifted each one by the chin to look from eye to eye. “Why, you two are masterpieces! Such grace, such delicate comeliness,” he said, enjoying how their faces looked intoxicated with the effects of his words. “From your cute little ears to your come-hither eyes to your invitingly kissable lips,” he continued, rewarded with little smiles as he made them putty in his hands. Speaking of which…
“Not to mention your fantastic racks,” he said without any veneer of civility, “and your sexy wasp-waists, and your big, bountiful butts!” He emphasized the last point by slapping a hand onto the outermost barely-clad rump cheek of the girls on either side and squeezing enthusiastically while hugging them in close. As expected, even these vulgar compliments elicited the desired effect. The two identically-shaped Rarities gasped excitedly and giggled as they leaned into him, letting their faces rest on his chest. “Mmm, these asses are first-class, ladies!” he chortled, kneading their backsides greedily.
They mewled in his groping grip, bubbly giggles and aroused coos forming a symphony for his delighted ears. Even the crudest flattery only served as coal for their fireboxes and loosened them up more than the finest wine. Tails wagging lazily behind them, they wrapped their arms around their new best friend as he continued to manhandle their posteriors. They seemed to be completely under the spell of his words at this point. The one in the fruit-stripe sweater dress turned to face him head-on, taking her turn to grab his butt and pulling her body close in all over.
“Mmmm, you two want to come and class up my joint?” he asked, already confident of the answer he’d receive.
“Darling!”
Instead of a kiss he felt the alarming sensation of the gas dispenser slip out of his waistband and disappear behind him. Sherbet-dress shoved him hard, causing him to lose balance and nearly topple backwards. A hiss, a puff of something against his clothes from behind, a spreading warmth as his vision was taken by a swirling multicolored haze. He tried not to breathe and failed, some of the vapors were already burning in his lungs. He coughed, but his hacking only served to draw in more and more of the nanite swarm. Through the bright fog of his own design, he saw nothing, but the sounds of two sets of high-heeled shoes running for the opening of the alleyway echoed in his ears until he lost his grip on consciousness. Nanites had diffused quickly past his blood-brain barrier and were unraveling his mind to rebuild it according to their pre-programmed blueprints.