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"Well, you're the expert here," he purrs, leaning forward a little when Bones moves away from him, and he's left there, naked and bent over, ass practically on display for when Bones comes back. Which he's seriously hoping will be very soon, and not because he's worried about someone else walking in at random. He just wants the doctor pressed up close to him again, those warm, talented hands on his body.

"You know I'd never let another doctor examine me," he speaks up, tone light but playful, and of course perfectly innocent.

McCoy's already uncapped the lube as he leans in again, making sure that the warmth of his body is pressed up against him as much as he can, but it's not Jim's ass he's working on. No. He takes the lube and presses it into Jim's hands. "Well, in that case, maybe I ought to reward you for that," he says, the sound of his jeans unbuttoning as he pushes them down and off.

"How about you take that and I guide you through what preparing someone for an intimate exam looks like?" he suggests. "You up for some lessons?"

Jim still shudders when he feels Bones press up close again, closing his eyes for a moment and only opening them when Bones places the lube in his hand. He looks at the bottle in his hand, lost for about the second it takes him to catch on.

Oh.

"Yes," he answers, nearly a broken plea. He sucks in a breath and nods. "Yes, please. Tell me what to do."

Well, that requires some very helpful instructions, doesn't it? Lucky for McCoy, he's well trained and he knows exactly how to give someone the tools they need to succeed. He takes Jim's hands and splays them, matches his fingers with Jim's, just to get it a little wider.

"How about we start with you getting some lube on your fingers," he says, eyes sliding down. "And I'll get myself prepared for you. Sound all right, Captain?"

Jim draws in a slow breath, licking his own lips while he watches their linked hands, the way Bones moves his fingers against his own. He nods slowly, propping himself on his elbows as he uncaps the bottle, then squeezes some of the lube on two of his fingers.

"Anything you say, doctor," his voice lilts, teasing, and he glances over his shoulder with a smile."And now? What should I do?"

McCoy could get used to hearing Jim call him 'doctor' like that. He's been busy taking off his pants so Jim can do what he wants, letting them pool around his ankles as he leans his forearms on the biobed, stretching his body out and sticking his ass back.

"Well, let's say you were going to examine me," he says, his voice on the border of professional and flirtatious. "I'd start with telling the patient, me, what you're planning. No surprises."

Jim looks over his shoulder at that, smile on his lips, a soft laugh on the tip of his tongue. "Shouldn't you be the one telling me what you're gonna do with me, then?"

Still, he reaches behind himself, hand snaking between their bodies. "Would you, I don't know... feel up any sensitive areas and see how they respond? Feel for anything that just seems weird?" He pushes one finger in slowly, letting out a shuddered gasp. "Maybe do a little probing?"

"I mean, with a normal patient, it'd be pretty clinical," he admits, slipping out of the roleplay just because the professional side of him can't let this slide without him defending his reputation. Right, but that's not what they're doing here.

He nods, re-orients, and tells himself that he can do this. He might be out of practice, but he's not dead. "I'd want to make sure my patient feels comfortable, safe, like they can tell their doctor anything in the world. Especially if you suspect that patient might just like their doctor a little too much."

"I do feel pretty," he trails off with a shaky sigh, then a soft gasp as one finger turns into two, and he slowly starts working himself open for Bones. "Comfortable. I mean, I don't know if... I'm doing this right. The-- examination."

He bends over even more, back arching and ass jutting out, fingers pushing in deeper. "Take a look, doctor? Tell me what you think?"

McCoy can't help his laugh as he turns and looks Jim over, very slowly, with a great deal of intent. God, he looks handsome like that, and McCoy knows that he could play doctor like this all day long, if he had a choice.

"I think that you're doing pretty well," he says, shifting to take some of the lube for his own fingers. "Now, how about you let a professional with some expert fingers finish that off for you, darling?"

He bites at his lower lip when he hears Bones fumble with the bottle, letting out a low whine. The moment Bones says he'll take over, he pulls his fingers out, dragging them slowly one last time and finally moving his hand away, propping both arms on the bed as he arches his back further and raises his ass up for Bones.

"Please," he tries to keep his voice even, but it's a little shaky despite himself. "Please, show me how you do it."

That's pretty much all he needs before he's going to go a little wild with what he wants to do for Jim. His fingers coated and slick, he shifts a little closer, but it's not a doctor's touch or even a quick fuck. It's a tender touch, the affection and love he feels for Jim in the way he slides his fingers in.

"I got you," he murmurs, voice soft and low. "Don't you worry, Jim, I've always got you, just relax into me."

The fact that Bones's touch is so slow and gentle only makes the moment more overwhelming. Jim can feel his body heat up all over, a deep flush that crawls up his chest and colors his cheeks, pushing out a huff of air from his lungs that comes out as a gasp.

"Shit," he breathes out when he remembers what they're supposed to be doing, here. A hand is placed over his own mouth, as he shifts his legs wider apart and bucks his hips back gently to meet Bones's fingers. "Yeah... that's good. You can... keep going. Doctor."

McCoy grins as he leans in and lets his lips hesitate just over his cheeks, wanting to tease more as he works, but also not wanting to end the moment so soon. He laughs when Jim keeps playing the part, a laugh genuinely infused with warmth.

"Well, good, because I had no plans to stop, Captain," he replies, cheeky and a little smug as he moves his fingers in a little more, sliding them out as he coats them with more lube. "Now, some of my patients, they're willing to let me put even more of my fingers in. Is that something you'd like to try?"

Well, there is a reason why they still have those sound records still playing, and Jim fully intends to play the part for as long as he can manage. Which will likely be until Bones is literally fucking him silly against the biobed, but for now he doesn't have much difficulty mustering the focus.

He suppresses a moan and instead lets out a strained hum, as though he's assessing the sensation, trying to ignore the way his whole body pulses and feels flushed from the touch, and the words. "Thought you knew I'm your most willing patient," he purrs, glancing over his shoulder. "Give me more. I want it."

He's not about to work up to fisting just yet, but he thinks that maybe one day. Right now, he moves up to three fingers and then decides to coat a fourth, seeing as it's more length than girth as he slides them in, being much more cautious.

They might be playing, but safety's still gotta come first. "You want this?" he checks. "Work yourself open for me, Jim," he coaxes. "Nice and easy now, I got you."

Jim doesn't even realize that the thought crosses Bones's mind, or he might've had to be the one to say stop for once. All he feels is the wonderful stretch of muscles as those fingers slide carefully into him, a girth that he still can manage all too well.

"Even wider?" He breathes out, a laugh dissolving into a moan. He pushes back against those fingers, fucking himself against Bones's hand, and tries to reach behind himself enough to touch Bones's dick. "How big a thing are you shoving up my ass?"

"Maybe I just want to be sure," is what he says, but he's going to do this the normal way, easing his fingers and taking his time to slowly open Jim up, but when he starts reaching back to touch his dick, well, it's not going to be much longer before he gives in, is it?

"You wanna be real complimentary, you can say it's the biggest you've seen," he drawls, "though that might not be true." Jim's been with plenty of people and species, who knows what he's already had?

Jim laughs airily, his breaths still short and heavy, as he tries to stroke at least the head of Bones's cock. It's true he can't say it's the biggest he's ever seen, but that's hardly the most important aspect of it. Besides, Bones may not be the biggest, but he's still big.

"I can say it's the best I've ever had," he purrs, biting on his lower lip as he pushes back against Bones's fingers, squeezing his own hand tight around the head of his dick. "Come on..."

McCoy lets his forehead fall onto Jim's shoulder, breathing out slowly, wanting to take his time and yet, at the same time, not sure he's got that kind of patience. He's not so sure that anyone in the world has that kind of patience, which is why he shifts and frames Jim's hips with his hands before he gets them on his dick.

"Since you asked so nicely..." He doesn't really wanna wait any longer and he's barely even recalling that they're playing at anything, preferring instead to just start working into Jim, pushing inside of him with a slow snap of his hips, wrapping his hand around Jim's dick, breathing out when it's exactly what he wants.

Jim's definitely running short on patience right now, but on the other hand he really loves that Bones is taking the lead here, so he sucks in a breath and bites back a noise of complaint, letting the doctor take his time.

Thankfully he doesn't leave him waiting long, and the moment he feels the head of Bones's cock push past the loosened rim of his opening, he lets out a low, long moan, head falling down onto the biobed as he spreads his legs wider and pushes his hips back against Bones's groin. "Shit..."

McCoy doesn't want this to be a quick fuck, but Jim's gonna make it difficult to draw his out. He breathes in slowly and then grabs Jim by the hips so he can freeze him there, wanting to set the pace himself. Otherwise, they really are gonna be done this way too quickly.

"Easy, now," he pants, but he starts rocking forward, pushing Jim's back a little more so he gets an even better angle and yeah, that's it. He starts to fuck him a little faster, now that he's got the right line of it.

He does try to take it easy. He tries to take deep, slow breaths, tries to calm himself down, but then Bones presses a hand to his back, and he lets out a soft groan when he finds himself pinned to the bed. The groan turns into a breathless gasp when Bones rocks his hips against him and thrusts in at just the right angle, and his hands grip the biobed tightly, thighs trembling and muscles clenching tight around Bones's cock.

"Bones," he moans the name, letting out a stuttered breath, arching his ass up and trying to push back against each deep, hard thrust, wanting to feel Bones brush up against that same spot inside him again. "God, like that--"

Yeah, this is definitely a fantasy that he's had at least once, twice (maybe a dozen) times when Jim's been in here with him, because it's a damn arousing thing to imagine that he has this much power over Jim, that he could make him want this so much.

"Yeah," he breathes out, loving the way his name sounds. "How about you call me doctor," he suggests, because they're playing, aren't they? He's just trying to get all the things he possibly can, because who knows when they'll get the chance again?

Jim breathes out a groan that turns into a whimper halfway through, body pushed forcefully against the bed with each hard thrust as Bones buries his cock in deep. He grabs the edges of the bed tightly, trying to keep himself in that same perfect angle, breath worked up and body hot and trembling all over.

"Yes... doctor. I'm sorry," he whines quietly, face pressed to the hard mattress, glancing over his own shoulder to look at Bones. "Take... real good care of me, please..."