A/N: if you got here, I don't think you need a smut warning. But, just in case, FYI Xander is into medical fetishism, though what he does here isn't going to be too hardore.

And that's a little clue as to how I see Xander. 

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Xander bounds up the stone steps to François' townhouse, rapping sharply on the door. 

"Hello, Allie, how are you?" 

"Hello Master Alexander, please come in. Ellis and River have gone to the salon, Sir, they are due back shortly, and Master François asked that you go to the playroom to set up." 

"Thank you, Allie." 

Allie is a sweet sub, happy with being generally submissive and subservient, not really drawn hugely to the BDSM side, although Xander had scened with him a couple of years ago before he'd come to that realization and begun working for François as his butler. 

Xander is here now to work with River, and he's impossibly excited. The boy is delicious, and Xander knows that's a big comment coming from him, a guy who can generally take his pick of the absolute cream of the crop – looks-wise. Though he's never had much luck matching up the beautiful boys he selects with his fetish needs. 

As he's finishing setting up the room, which Francois has already set up the examination table in, there's a quiet knock at the door and he opens it to see Ellis and River. 

"Master Xander, River is here for his appointment," Xander glances at his watch, right on time. 

"Come in River, it's good to see you. Hello Ellis." 

"Hello Master Xander," River sounds breathless with nerves. 

"River, before we start, may I ask why you asked me to provide some training for you? You know my preferences, yes?" 

"Yes, Sir. I- I'm not entirely sure I knew what to expect, but Ellis has given me some additional information." 

"And that has made you nervous?" 

"Yes, Sir." 

Xander doesn't want to scene with someone who is this unsure, though he has to concede that facing uncertain submissives comes with the territory of training them. He sends a quick message, then glances at his phone. 

"Ellis, please call Master Francois." 

Ellis goes to the doorway and holds a quiet conversation. When he comes back his face is happy. 

"River, would you like me to stay with you?" 

"Can you? Yes please, I think I'll feel happier." 

Xander checks his phone again to see the message from Francois. 

- Ellis will stay. He stays fully clothed and you keep your implements – all of them – away from him. Be careful with River – he's good but naïve. 

"Okay, River, before we get started, can you let me know what you're expecting from this scene?" 

"I'm not sure, Sir. I like the thought of the medical side, but I didn't really know the kind of things that were involved." 

"Well, I have never done a scene with Ellis, so please don't panic. Whilst there is a broad spectrum of things that I do, we're certainly not doing them all today, and we will go at your pace. The scenes Ellis may have seen at the club will have been more intense than what we will be doing here." 

Ellis looks a little chagrined at the subtle reprimand. 

 "Okay, Sir, that makes me feel better." 

"And because you're training, I will talk you through everything before I begin. Now, do you want role play, or do you just want me to use the instruments without role play?" 

"Uh, I think, perhaps, that role play may be a bit much for me at the moment." 

"Of course, but there is certainly a big place for a nervous patient; however, you're right, as I may not be able to read your responses as well if some are part of the role play, it's a good idea to avoid that today. I will, however, wear a white coat, and perhaps Ellis would care to be my nurse and wear scrubs." 

"Ooh, yes, Sir. In fact, I have some of my own." 

Ellis runs off to change and Xander instructs River to strip. He's happy River chose not to role play, and not just for the boy's wellbeing. It means an examination gown is unnecessary and Xander can closely explore River's toned body right from the beginning. 

"Climb up on the table, River, and lay back." 

His legs are long enough to hang over the end, and Xander gently lifts each foot in turn, strapping his ankles into the stirrups and spreading them a little just as Ellis returns. 

"River, I'll leave your arms free today. I know your safewords – can I hear you say them?" River repeats them. "Okay, I'm going to examine you first, digitally, then I will be performing various procedures. I will take your temperature rectally, examine you more closely rectally, and if you're comfortable, insert a sound and then a catheter. How do you feel about this?" 

"Um, okay, I think. Will you penetrate me, Sir?" 

"Well I've just listed several types of penetration so I think it's safe to say, yes," Xander grins cheekily. 

"Sorry, Sir, I mean will you fuck me, Sir." 

Hmmm, yes, just as delicious as he thought. 

"If you want me to, River, I will be more than happy to. But why don't we wait and see how you feel after the other procedures?" 

"Yes, Sir," River relaxes his head back, Ellis softly stroking his brown hair. 

 Xander explores the supine body before him, roaming his strong fingers over every available inch, though avoiding the erotic zones of his nipples and crotch. He strokes down River's long neck, making him arch back in pleasure, sliding down his chest and obliques, pressing firmly into the sensitive points on his hips, making him mewl at the sharp pressure. 

When he has the boy writhing against the table, he finally runs his fingers lightly across each hard nipple, the nubs contracting sharply under his touch. 

"Mmm, yes, so responsive," he murmurs as he applies equally as light a touch along the side of River's smooth cock, before finally brushing against the wrinkled pucker, which twitches under his fingertips. 

He glances at Ellis, who's watching River's reactions rather than what is being done to him, his full lower lip caught beneath his top teeth. Xander would love to play with Ellis, but there's no way Francois would sanction that, and Xander knows that Ellis has probably experienced much of what is going to happen himself anyway; regardless of the preferences and specialisms of each of the top Doms, Francois has them all covered expertly himself. 

Leaving a hand securely on River's knee, Xander reaches under the tables, opening the drawer to extract the thermometer he placed in there earlier, dipping it into the open pot of lube that sits on a warming plate. Although Ellis is holding River's hand, Xander always follows the tenet of making skin-to-skin time as consistent as possible, particularly to prevent drop, especially when a sub is floating. 

River isn't floating yet, but Xander can see he's close already, relaxing himself into the sensations as easily as a compliant hypnotism victim, as Xander slides the warm end of the narrow glass thermometer deep inside his unresisting muscle. It's incredibly slick but River's tight passage has no problem holding onto the intruder. 

He leaves it there, continuing the gentle roaming of his hands, paying a little more attention to the excited nipples, finally coming back to the smooth glass, sliding it in and out several times, causing a sexily desperate moan from River, who he knows wants more, much more. He's about to comply. 

Xander snappily applies stretchy gloves – all part of the game – swiping his finger through the warm lube, seating himself on the wheeled leather stool, so he's at the perfect height to watch his long finger enter River, his other hand gently curved on the tender inside of his thigh. Boy, would he like to mark that soft unblemished skin up, but maybe next time. 

He pushes slowly but deeply, in and out, until River's hips are raising, seeking more. With the intensity of what he does, Xander doesn't like to go too fast, and he carefully slides a second finger alongside the first, lightly scissoring them wide, watching the muscle stretch around them. He doesn't want to prepare him too much though, because this is going to be powerful. 

He dips the prongs of a triple speculum into the lube, taking off the worst of the ice-cold of the metal, and slides it inside River. 

"Keep your hips down, River. Let's open you up," he murmurs, shifting slightly as his own cock continues to swell. 

He pushes the handle firmly but slowly, listening to the beautiful mewls from River as he's inexorably spread, waiting until they become deep pants before he turns the screw, locking the prongs in place. He runs a finger along those hot walls, delicately scraping with his rubber-covered nails. He almost chuckles at River's whispered 'fuck', breathed out hard as his chest arches, his backside obediently kept down on the padded table. 

He's going to push the stunning boy now, collecting the narrow surgical steel sound from the drawer, dipping it in the lube and then standing, taking River's stiffened cock in his large hand, holding it firmly as he positions the sound at the tiny slit, carefully sliding the tip in, keeping hold as gravity gently allows it to keep sliding until it reaches the base of his cock, before smoothly pulling it up and allowing it to drop again. Again, River's back is arching but his hips remain still, his responses to the new sensation exquisite, his eyes rolling back as the tingling feeling passes continuously through his body. 

Xander changes the angle slightly, pushing a little deeper, making the tingle pass further, and he can see River's stretched ass quivering against the speculum. Xander is finally ready to take the next step, after being almost lost in River's reactions. He removes the sound and puts fresh gloves on, opening the sterile packaging of the foley catheter and carefully lubricating River's slit and the end of the catheter before carefully sliding it inside, twisting and adding lube to help its journey. 

He feels the resistance and tells River to push against it, before it slides in. 

"You okay?" he murmurs, stroking River's abdomen. 

"Yes, Sir, weird. Feels weird but good," River can barely do more than mumble and Xander smiles to himself. 

Xander fills the balloon to hold it in place, gently tugging to ensure it's in position, before releasing the syringe, allowing River's bladder to empty into the beaker Chase puts the tube into. When he's empty he begins to lightly moan, and Xander knows he's having the sensation that he's continuing to pee, and it's disorientating and arousing, particularly after the sensitivity caused by the sounding. He leaves him like that for a moment, knowing it won't be long before he has to take him, to reward him for his reactions. 

He turns the screw on the speculum and carefully releases it, sliding it out of River's stretched hole, leaning forward to lap at the stretched muscle. 

"Ooh, Sir, please, Sir." 

"Are you begging, River?" 

"Can I Sir, please...please will you fuck me?" 

Xander knows River has received a plethora of new and intense sensations, so he slowly withdraws the catheter, gently squeezing at River's cock once it's empty, hearing him beg once more. Once he's sheathed, he lines himself up with River's open hole, knowing he can go hard, gripping his muscular thighs as he enters swiftly, fucking into him as he finally moves his hips, regardless of his bound legs, fucking back and clenching his passage, already tightening with his imminent release. 

"Come for me, River, let go," Xander whispers, grasping River's weeping cock as his release shoots high, landing across his chest in a waterfall of ecstasy, Xander pulling out, sliding the condom off and adding his own spray to the glorious droplets covering him. 

* * * * *