Why not both?

After Lexi had time to recover from the **** of the previous machine, she was led to a third. This one having what looked like a stool, which she was instructed to bend over. She was strapped to it, with one strap around the waist, and two more, one around each of her thighs, just below her ass. Once again, cuffs were placed on her wrists and ankles, as well as a collar on her neck. The chains attached to her ankle cuffs were quickly tightened, so her legs were brought tight against the legs of the stool, the cool metal a not unpleasant sensation along the insides of her legs. The chains attached to the wrist cuffs were were connected to poles on either side of the stool, and as they were pulled tight, her arms were pulled back and out, which had the benefit of arching her back, pushing her chest out. Finally the collar's chain was tightened, attached to a fixture above her, pulling her head back, which seemed to push her chest out even more. Next the stool was raised up until she was up on her tip-toes. After that, the gag was placed back onto her mouth.

Lexi wriggled a bit in her bonds, enjoying the sensation, and finding her current position a bit of a challenge, but overall more comfortable than the last. She realized how wonderfully accessible this device made her, if someone were to have a mind to fuck her. A muffled moan betrayed her state of mind, and then Erin spoke to her, briefly, "Ok, so the first machine was about pleasure, the second pain. So I figured for the third, we'd go for a bit of both." She smiled and hit another button, "First the pleasure." And immediately she felt something between her legs, settling in over her clit. It began with an array of stimulation all at once, though on a very low setting. Vibration of course, suction too, and something lightly flicking across it like the tip of a tongue, as well as what Lexi thought felt like teeth, lightly grinding her clit between them. An altogether very pleasant feeling. As she moaned delightedly, Erin laughed, "And now the pain." With that, another part of the machine went into action. She felt the smacks on her ass, both cheeks, one after another, hand sized flexible paddles attached to rotors, making them spin around, and smack her ass, making her yelp, a low setting currently, but she had no doubt that will change.

"I think a few hours in this one ought to be sufficient." Erin looked over the bound, naked beauty, admiring her handiwork, then, "Oh I almost forgot." And then added a pair of clamps, clipping them onto Lexi's nipples. Lexi winced a bit at the pinch, but that was not the most devious part of these. They began vibrating, and would, randomly it seemed, deliver a shock. With that, Erin left Lexi to the not-so-tender care of the machine. The nude blonde positioned lewdly, bent over, with the stool raised up above her head, tits thrust out. As Lexi looked back at the customers, she could tell they approved of the sight. She found herself imagining the onlookers masturbating as they stared at her, which caused her muffled moans to grow louder. Picturing them so turned on by her, playing with themselves, cumming on her. She writhed and squirmed in her bonds as much as was possible, which wasn't very much, but it did seem to please her audience. The clit stim, paddles and nipple clamps continued doing their jobs as well, varying speeds and intensities, seemingly at random. It wasn't long at all before Lexi found herself having the first orgasm of many that this machine would provide her.

Lexi found herself sinking deep into her lust, bound and helpless, nude and on display, her body stimulated so amazingly by the wonderful machine. Whenever she felt an orgasm approaching, she would stare deeply into one of her audience's eyes, which had quite the positive effect on them. She loved how they looked at her, eyes full of lust, like a starving person in a butcher shop. Like she was a piece of meat being roasted to perfection, to be devoured by them. She knew in that moment that if everyone wanted to start fucking her, using her body the way they clearly desired, she would welcome it, not that she could do anything about it if she didn't. Which only made the whole situation even hotter for her. She considered getting one of these machines for herself, but if she did, who would there be to see her in it? Lexi's lust-drunk mind began contemplating the possibility of hooking it up to the internet, with webcams for all to see, and the ability for her viewers to control the remotes. Now that would make for one hell of an OnlyFans! She giggled to herself at the thought.

But, as all things do, her time in the machine came to an end. Erin could tell that Lexi was thoroughly enjoying herself, so she left her in the machine until all the customers had left and she had closed shop. Lexi stretched and sighed as she was freed. Grateful for the comfort, but part of her already missed being in it. "You did wonderfully today, especially for a first-timer! Really, you've helped my bottom line quite a lot, so if you want to make this a regular thing, I'd be more than happy to have you back." Lexi nodded eagerly, "Oh I'm definitely going to be back!" She said as Erin transferred their agreed upon payment for the day's modeling work. Then looked Lexi's nude body over, a mischievous look forming on her face. "So, one bit of extra fun for you, if you'd like. You can either have your clothes back, or you can be a little more adventurous, and let me dress that sexy body up in some of the fetishwear I make." Lexi thought about it very briefly, and chose...