"Ah, Vax, excellent." Percy stood from his desk, tucking the sketches he'd been working on into a drawer. "I need your help testing something."
"You're not electrocuting me again," Vax said flatly, taking a step away from the door.
Percy chuckled like it hadn't been three days before Vax had regained sensation in his extremities. "No, no, nothing like that. Please, come in. And, ah, shut the door behind you."
Vax narrowed his eyes but did as he was asked, stepping into the room and letting the door shut behind him with a quiet click.
"What've you cooked up this time?" he asked, peering around the room.
"There was something we saw in Marquet," Percy said, wheeling something covered in a canvas drop-cloth into the center of the room. "The design struck me as intriguing, and I've finally found time to try to recreate it. I just need to adjust the finer details, and unfortunately it's not something I can use and observe at the same time."
"So you need a test subject."
"I prefer to think of it as a research assistant."
"You would." Vax's flat tone did nothing to dampen Percy's enthusiasm as he locked the wheels on the device and unceremoniously whipped away the drop cloth.
It took Vax a second to realize what he was looking at. "Percival," he said, tone rising in question. "What the fuck."
"Precisely!" That was exactly the response he'd wanted, Vax realized. Probably been snickering to himself over that one for days. "One of the brothels utilized a device similar to this and charged a king's ransom for the privilege. I didn't, ah, partake myself, but the mechanics of it were very intriguiging."
"Going into the sex toy business, de Rolo?" Vax circled around the device. It was a piston, attached to one of Percy's lightning generators, and attached to the piston was an artifical phallus made of some smooth material Vax couldn't immediately place.
"I was going to use a middleman to lease it out," Percy admitted, coughing slightly. "But only once I'm sure it works."
"That makes sense, don't need the brothel catching heat because of shoddy machinery." The full situation finally hit Vax and he whirled around to stare Percy down. "Wai - wait a fucking minute, Percy - "
"You'd be getting in on the ground floor of progress." Percy's little grin and sing-song tone were as infuriating at they were endearing, which only infuriated Vax more.
"You don't - my sister - "
"Knows, was asked, turned it down, and gave me free reign to ask whoever else I wanted. Honestly my first thought was Scanlan, but if it works I'll never be able to keep him out of here."
Vax's eyes darted between Percy and the machine in the center of the room. "...how does it work?"
Percy bounced on his toes a little before moving around the machine to point out the switches on the side. "When powered on, these switches control the speed and force of the piston," he said. "The piston then, well. Pistons. And the user reaps the benefits, in whichever way they see fit."
"...and it's safe?"
"As safe as I can make it without having tested it," Percy said. "Mainly I need to test the longevity of the generator when the piston is meeting actual resistance."
"...so you need it to run for a long time."
Vax would have sworn there was a gleam in Percy's eyes. "I need it to run for a long time."
Vax, to his horror, was already about half-hard in his trousers just from the description. His imagination had fully run away with the idea, his body responding with almost embarrassing eagerness.
"...fine."
Percy grinned. "Excellent." He gestured at a corner of the room blocked off by a folding screen. "Please, take your time."
Vax stepped behind the screen, stripping out of his clothes and setting them on the low bench there. He took advantage of the relative privacy to question himself, if he really wanted to do this or if Percy's enthusiasm was just catching.
His mind responded with a distant memory of the last time he'd had the opportunity to recieve rather than provide, accompanied by a full-bodied shiver and a strong throb of his cock. He loved Keyleth, wouldn't trade her or what they did together for anything in the world. But he'd be lying if he said he didn't miss it sometimes.
"Fine, alright," he muttered, stepping out from behind the screen with as much dignity as he could muster.
Dignity that flew right out the window at the sight of Percy applying oil to the smooth surface of the machine's dick, his fist wrapped around it and pumping slowly. The sight sent an unexpected punch of arousal through Vax, resulting in a small noise that he tried too late to muffle.
Percy's eyes darted up, his hand stilling, and Vax was almost gratified to see a flush crawling up his neck.
"Seemed the most efficient method," he muttered, turning away to find a rag for his hand. "You can...prepare yourself...however you like. Here," he said, almost as an afterthought. "This will help." He handed Vax a vial of something blue-tinted.
"What is it?" Vax asked, peering at him.
"It'll help," was all Percy said, and Vax shrugged and downed it. He'd poisoned himself for worse reasons.
There was a low table in front of the machine now, its surface padded and plush, and Vax glanced quickly at Percy's back before climbing onto it on his hands and knees. He had to reach behind himself to guide the machine towards his entrance, and he blew his breath out in a long, low sigh as he felt it against his skin.
"Got any of that oil left?" he asked, and heard Percy's feet shuffle on the stone floor as he brought the bottle over to press it into Vax's hand. Vax dribbled a generous amount onto his fingers, and from there into the cleft of his ass, dipping gently past his rim once or twice just for good measure.
He could feel rather than see Percy watching him, the other man's gaze practically burning a hole through him, and his natural urge to put on a show took over. It made it less awkward, somehow, to slowly massage the oil over his skin, knowing that flush was crawling up around Percy's ears, that the awkward cough meant he had turned away in embarrassment.
"Alright," he said when he was satisfied, both with his preparation and Percy's fluster. "Give me a second, it's been a while."
Percy hummed something vaguely aquisencent, and Vax reached back again to line the artificial cock up with his hole. Gently, slowly, he pushed backwards, feeling the head nudge past the first ring of resistance. It was an easier slide than he expected, but the stretch still burned as he pressed further, so he gave himself a moment to adjust before pushing back a little farther.
At least this thing's a reasonable size, he thought idly. Then the thought occured to him that this false cock was based off of Percy's cock, and something about that thought sent a thrum of arousal through him that made a muffled groan escape him.
"Alright?" Percy asked. He wasn't looking at Vax, which was a small mercy in the moment.
"Yeah," Vax gasped. "Yeah, just - gimme a moment - "
He slid back farther along the shaft, rocking back and forth until he felt the base of the attachement press against his ass. This was as far as it went, apparently. Which wasn't at all disappointing; he felt stretched and full in a way he hadn't in a long while.
"Alright," he said, trying to control his voice and not have the words come out in a dry pant. It almost worked. "Alright, I'm - ready, I suppose."
"Right." Percy's footsteps stopped behind Vax, near the controls of the machine. "We'll start at the lower setting. Just to - to ease you into it."
"Right." Vax took a deep breath and let it out slowly, trying to relax as the generator thrummed to life. There was a difference between working something into yourself and having something worked into you.
The difference was made clear immediately when the machine drew back and slid forward again, almost inexorably slowly. The slide and burn was soft, almost gentle, dragging a groan out of Vax as the head of it buried itself back inside him.
"Good?" Percy murmured.
"Yeah," Vax responded in kind, eyes dropping shut. And it was, it was nice, the kind of slow, gentle fuck that took a whole night to end, either in a final, exhilarating release or desperate pleading for permission to come, depending on who you were playing with. More memories that went straight to his cock.
"Tell me when you're ready for the next speed."
"It's your show, Percival. Whatever you need."
That got another flustered cough out of Percy, which made Vax smile. Apparently Vax hadn't been obvious about his predilection for being done to instead of being done for. That misconception was out the window after this little display.
"Right then." There was a click from the machine and the piston increased in speed, the shift making Vax's breath catch in his throat. His cock pulsed with the change in sensation, the machine rocking him forward now and pulling him slightly back with each withdrawal.
"Good?" Percy asked.
"Yeah, yeah," Vax panted. "Great." The head of the machine's cock was just shy of where he really wanted it, brushing close enough that that Vax felt himself squirming around on the table to try to change the angle.
"Everything alright?" Percy asked, and suddenly he was right next to Vax, concerned.
"Yeah," Vax gasped. "Just - close - "
"...ah. One moment." His footsteps receded and the machine stopped suddenly, and Vax almost cried out from the loss. His cock was hanging heavy underneath him, leaking onto the plush surface of the table. He hadn't touched himself in all this time but he wrapped one hand around his cock now, just for the relief of the pressure.
"There," Percy said. "I can't change the depth of the thrusts while it's running. This should be more...satisfactory."
The machine started back up at the same speed it had been when Percy stopped it, and he finally did cry out as the cock plunged into him deep enough to hit the little bundle of nerves that had stars exploding in the corners of his vision. His hand dropped off of his cock to support his weight, his head dropping as the machine fucked into him over and over, hitting that spot with ruthless precision and unfaltering rhythm until his climax was wrenched from him with a strangled cry.
"...next speed." Vax almost didn't hear Percy's announcement over the sound of his heartbeat in his ears, and he screamed as the machine picked up in pace.
He dropped to his elbows, no longer able to support himself on his hands. The pace was inhuman, no person would be able to fuck this fast, not for this long. The angle was still precise, slamming into his prostate so quickly that there was no reprieve, just a constant assault on his oversensitive body that pulled a sob from him as he shuddered under its ministrations.
Another climax ripped through him, totally unexpected, and he started squirming against the machine, unable to escape the sensations as it continued its relentless pace.
"Percy," he gasped out.
"Test's still running," was all Percy said, and Vax wondered where the awkward, flushed Percival from earlier had gone, where this cold, dominant personality had come from.
"Is it now?" Vax gasped, struggling to retain his own thoughts as the machine continued fucking into him. "Is this what you wanted, Per -" He was cut off by a long, guttural groan as his body shuddered its way through another orgasm, his cock twitching dry against his abdomen. "Is this what you wanted?" he gasped out. "Someone in here on their knees? Getting fucked by your machine?" His head dropped onto his folded arms, his neck and shoulders exhausted. "Is this your cock, Percival? Is this one big projection fantasy for you?"
There were fingers in his hair suddenly, and he felt his head pulled upwards. "Would you like a comparison?" Vax forced his eyes open to see Percy's cock filling his vision.
"It is your cock," he said deliriously. "You narcissistic - " He was silenced by Percy shoving the head of said cock against his lips, and he opened his mouth readily to take it in. The machine rocked him forward, forcing him along the shaft, and Percy sighed in relief as he plunged himself into Vax's mouth.
"It's one way to shut you up," he muttered, and with a wave of defiance Vax moaned, sending vibrations along Percy's cock and making his fingers tighten in Vax's hair. The pressure sent him over the edge again, almost painfully this time, and he started unconsciously trying to pull himself away from the machine.
"Test isn't done yet," Percy said again, tugging on Vax's hair in warning, and Vax felt a tear he hadn't expected slide down his cheek. "Generator's still going strong," Percy added, and a shiver of arousal-tinged fear ran through Vax. "This might be a test of your endurance rather than that of the machine."
Vax tried to sob but Percy's cock was too far down his throat. He tried to move away but the machine followed him, not letting him escape. He came again, little more than a painful shudder of nerves by now, and Percy's other hand came down into his hair to hold him still as he fucked into Vax's mouth. Nowhere near as fast or as hard as the machine, but it felt almost as deep, the head of his cock against Vax's throat with every thrust and breath becoming hard to draw.
"Gods," Percy breathed. "I knew you'd look amazing like this but the way you sound." His fingers tightened in Vax's hair, his hips stuttering. "The way you feel. Gods above, Vax. Fuck."
He came straight down Vax's throat, Vax sputtering and coughing as he tried to swallow it all down because the alternative was to choke. Percy finally withdrew and Vax coughed as air returned to his lungs, the machine still rocking him forward with every thrust as his head dropped back down to his arms.
Percy knelt next to Vax, his hand reaching under him to brush the pad of one finger along the length of his cock. Vax keened between his teeth, trying to move away from the touch, even that feather-light brush too much sensation to bear. But Percy followed his movement, wrapping his hand around Vax's cock and drawing a wretched scream out of him.
"One more," he murmured. "Can I get one more out of you, Vax? You've done so well." The hand began sliding along Vax's cock so softly, so gently, and Vax sobbed into his arms. "One more," Percy soothed as his hand traveled the length of Vax's cock. "One more. Come for me, Vax."
Vax did, shuddering and sobbing through a final climax, the wail it ripped from him echoing off the walls of Percy's workshop.
The machine stopped, the phallus eased from Vax's aching ass. Percy manipulated his useless limbs into a sitting position, wrapping a blanket around his shoulders and tipping a potion into his mouth with quiet encouragement to swallow it down. It was followed by a flask of water, the same similar encouragements, and praise when he managed to keep both down.
"You did so well," Percy murmured. "It'd been a while, I wasn't sure we hadn't gone too far."
"W'd've stopped you," Vax murmured, not able to fully open his eyes. The potion was doing its job, but the exhaustion remained, as well as an ache through his entire body.
"I know." Percy gathered Vax against him, running his fingers through his hair. "I know."
"Next time you get on the table," Vax mumbled, and Percy just laughed.
"Whatever you want. You earned it."
