7.113 – PORTAL DEMONSTRATIONS II

Natalie's throat went dry. Every heartbeat pulsed down her body and into her cock—her cock which was squeezed tight between her breasts, slowly pushing deeper into the plushness as the automaton drove upward.

Natalie swallowed. "This is, uh, a little—" The words trailed off as she watched her cock tip pop through to her collarbone, a bead of pre-cum appearing and spilling down to pool in the crevice between her tits. A second later, another appeared and dribbled down as well. Was she that aroused? That she was drooling pre-cum this hard? She shouldn't be. This sensation on her cock was her own tits.

"This is …?" the automaton prompted her teasingly. She dragged down, and Natalie's cock disappeared. Every inch of soft skin touching her cock was heavenly.

Could she be blamed for enjoying it so much? She did have her dick between a girl's tits.

Just, they were her own.

"Really hot," Natalie breathed, which definitely wasn't what she'd meant to say.

"I agree, Mistress."

The automaton turned and stepped into her side, pressing her curves into Natalie's own as her left hand snuck around her waist. Her head leaned against Natalie's shoulder as her right hand continued its slow up-and-down, not a proper thrusting speed, a luxurious pace that let both of them marvel at what was happening. Each successive motion let Natalie slip in and out of her breasts a little easier, because she was so insanely turned on that her cock tip was dribbling out pre-cum in all but a steady stream.

She was fucking her own tits, and using her pre-cum as lubricant.

So perverted.

The automaton's body to her side was soft, if less than a human's. Her metal skin yielded with a very slight plushness as her breast pushed into Natalie's, but the gray metal was markedly colder and firmer than what Natalie had grown to expect from a partner's embrace. Not that she considered it a downside. The difference added an exciting exoticness to her presence.

"Makes me wonder what being in your tits would feel like," Natalie murmured, her eyes briefly on her partner and not the lewd thrusting happening between her breasts.

The automaton smiled. "You can find out whenever you please," she said slyly. "I admit, Mistress, I was finding myself discouraged by your repeated lack of interest."

"Well, that's not exactly …" She trailed off, then coughed. The automaton's stroking had stilled, interested in her response. "I didn't want to make assumptions," she said. "I mean, I didn't know automatons even—you know—liked this?"

The automaton nodded. "I understand. My creation was a surprise to me as well. But I do have nipples," she said, looking down at her own breasts in emphasis. "Did that not indicate I was built to serve in another way?"

Well. Natalie had been circling back to that idea since the start of her Emporium trip. Maybe she should have listened to her instincts.

"I didn't want to make assumptions." She reached around the automaton's waist and grabbed a handful of her breast, giving a squeeze. The automaton sucked in a breath and made a happy noise. "But don't get me wrong," she murmured, leaning closer. "I've been wanting to fuck you since the moment I laid eyes on you. I was just being cautious."

The automaton shivered. "I'm pleased to hear that, Mistress." Her lips turned up, and she met Natalie's eyes playfully. Apparently she wasn't a total pushover, because she teased, "Seems like you're having more fun fucking yourself right now, though. I wouldn't want to distract from that."

Abruptly, she began thrusting Natalie's cock between her breasts at a proper speed. Natalie couldn't help the way her spine arched, the sudden onslaught of sensations around her cock making her toes curl. Her gaze turned downward again, watching her own titfuck as it grew messier, the tip popping out and then vanishing over and over, pre-cum coating her cleavage as her tits bounced.

"You know, if I push all the way in," the automaton mused, raising the ring higher, making Natalie's cock shove through to the point it bumped into her chin. "You could probably have even more fun?"

Natalie's entire body seized at the idea.

If she wanted to, she could take her own cock into her mouth. Feel what it was like to be on both sides of the act at once. Her lips parted. It was right there. If she leaned down a little bit …

"I don't think that's a good idea," she murmured huskily, transfixed by the sight. There were lines that shouldn't be crossed, and sucking her own cock had to be one of them.

Even if logically, it was just masturbation. Right?

"Are you sure, Mistress?" the automaton asked, amused, and she pushed a little higher—and with the angle and how Natalie had instinctively leaned forward and positioned herself:

Her own cock kissed into her lips.

A lightning bolt struck her, and she jerked her head back, flushing so deeply she felt like she might light on fire.

N-No. She couldn't do that. The event with Ana had been different. It might have been her body, but she hadn't been the one piloting it. Actually sucking her own cock was going too far.

She wasn't there yet.

Y-Yet?

Ever. She wouldn't ever do that. I-It was way too perverted.

More than fucking her own tits?

She found her line of reasoning suddenly dubious as the automaton picked up pace, not put off by how her partner didn't want—or rather, hadn't chosen—to add her mouth into the mix.

Her entire length was being squeezed tight, the whole thing coated in her pre-cum by now. Her breasts being pushed and jostled with every passing thrust, the automaton's hand bumping into her with the pistoning.

No, this wasn't much better. Already a ten out of a ten, on a pervertedness scale, at least as far as she was concerned. The only reason she was letting it happen was because an enthusiastic partner was the one driving the whole act.

And maybe because it felt amazing. Having her tits used, using her tits. Both at the same time. It was … pretty great.

"Getting close?" the automaton murmured. "Your cock is twitching." She looked up at Natalie with shadowed eyes. "Is my Mistress about to spill her cock out right in front of me? Is she going to cum from fucking her own breasts?"

Natalie swallowed. She really wouldn't have expected the automaton to take the lead like this, given her previously cheerful and eager-to-please nature ... but maybe that was exactly why she'd said those words. The automaton wanted nothing more than for Natalie to enjoy herself. It was her only goal. And she'd intuited that Natalie might enjoy the lewd words.

"And I get to watch," the automaton marveled, sounding like she'd been granted some amazing privilege. Her hand movements sped up. "I can't imagine how wonderful it must feel. But I can imagine how it will look. The way your cock will spasm between your breasts as you soak yourself with your own cum ... Please, Mistress, I want to see it. Cum for me?" She bit her lip, pumping even more vigorously, and her breath grew labored in anticipation.

Obviously, Natalie couldn't stop herself. Not with being worked so perfectly. Her orgasm built, a pressure coiling in her abdomen, her toes curling and muscles tightening.

Shame rolled through her—she wasn't really about to cum into her own tits?

Her head fell back and she groaned aloud as she felt the dam burst, a rush of pleasure flowing out through her cock. It jumped, the first rope of cum launching out, splattering against her chin and dribbling down her breasts—entering the crevice and giving even more lubrication.

Now she really was fucking her own tits with her cum as lubricant. So obscene. Her second shot fired a split-second later, while her cock was still in between the pillows, and the white fluid suffused the space, making each thrust squelch as the automaton jerked her hand up and down.

"Ah," the automaton said breathily, her eyes round with delight. "You're really doing it, Mistress. Cumming from your own breasts. So lewd. More. Give me everything you have."

Natalie's body jerked and shivered with each subsequent jet of cum that fired off. It drenched her cleavage. She couldn't believe how good it felt. The automaton was right—she was perverted, if this was getting her off so well. She moaned, hips arching forward with each spurt, thrusting slightly herself, as if it would somehow help, and she fired herself until she was empty, drowning in the bliss of her own tits.

The last drop of cum dribbled out, joining the mess pooled in her cleavage, and Natalie's orgasm finally subsided.