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It wasn’t every day that Jim got to try out new things. He had been sexually involved with enough people for enough time to have tried a plethora of kinks, and frankly, he was becoming a little bored with it.
So, when he was forced to spend a month with nothing up his ass to deal with the aftermath of his latest sexcapade, Jim asked for something he hadn’t felt the need to do in a very long time.
“Hey, Spock?” He said when their makeout session stopped for a moment to allow them both to breathe. “Can I fuck you?”
Spock raised an eyebrow at him. “Is there a particular reason for your sudden interest in being the penetrating partner?”
“I’m getting bored of blowjobs. Plus, I want to treat you to something nice. When was the last time you got fucked?”
“I have never been anally penetrated,” Spock said, and Jim gaped.
“What? Seriously?” Jim backed away slightly to look at him more easily.
“Indeed.”
“Well, now I gotta.”
Jim sat up fully, moving slightly to position himself better between Spock’s legs, spreading his thighs. Spock’s slit was leaking slightly, the skin around it glistening. They hadn’t fucked yet, but Jim enjoyed being naked whenever he could, and Spock indulged him by stripping as well, even when they didn’t plan on having sex. It made situations where they suddenly decided to have sex anyway much easier.
Jim rubbed his fingers against Spock’s slit, causing him to hiss softly as more fluid began being produced. Jim loved using Spock’s own lubricant rather than a store bought one; for one, it was more economical and environmentally friendly; for another, it was something he already knew his body wouldn’t have an adverse reaction; but mostly, he just liked it because it was really fucking hot.
After a few moments of rubbing his fingers there and coating them in Spock’s juices, Jim moved his hand further down. Using his other hand he spread Spock’s cheeks and leaned down to get a better look at the pale, puckered hole hidden there. Despite being sexually involved for over three years at that point, Jim had never taken a really close look at Spock’s ass. He always preferred going down on his genital sheath when he had the option, or, ideally, getting fucked by that wonderfully large cock. All that meant he had sourly neglected this clearly sensitive part of Spock’s body, as the ring of muscle twitched as he breathed over it.
Jim couldn’t help himself. Instead of pressing his fingers against it like he had planned, he used his damp hand to further pry apart Spock’s cheeks before diving in and pressing his tongue flat against the opening, giving one long, firm lick. Spock jerked and moaned loudly.
There was a groaning from the other side of the bed, and Jim raised his head just in time to see Bones blink his eyes open.
“Sorry, did we wake you?” Jim half-whispered.
“Fucking—are you serious? It’s like three AM,” Bones grumbled.
“The time is currently 07:36, Leonard,” Spock said.
“Yeah, and it’s my day off, so it’s basically three AM. The two of you can’t go eight hours without fucking, can you.”
“No, so if you can let us get back to it…” Jim said. Bones mumbled something unintelligible and rolled over onto his other side. Jim grinned and lowered his head back between Spock’s legs.
This time Spock bit his lip to silence himself, but despite being rusty Jim was experienced enough to draw those tiny whimpers from Spock. Bones didn’t budge even as Spock began jerking his hips up, attempting to urge Jim’s tongue inside. Jim obliged him, shifting his hands to hold Spock’s hips up, inadvertently pressing up against the hollows in Spock’s lower back, where his internal testicals were stored. That touch finally got him to moan again, properly, loudly, with such depth that Jim could feel himself beginning to leak pre-come from the sheer eroticism of it. Then, Jim pushed his tongue past the rim, and Spock moaned again.
Jim’s tongue continued its exploration, starting with gentle licks before proceeding to slowly thrust in and out. Spock’s moans had settled into panting and whimpering, now that the sensations were becoming familiar and he could control himself again. Jim didn’t want him to control himself, though—he wanted to make this the most amazingly mind-blowing experience the Vulcan had ever had, so he pushed his tongue in even farther, wiggling it around, stretching it to its limits and then some as his teeth pressed up against Spock’s rim. Spock keened, his hips jerking.
Jim pulled back, grinning. “Good?”
Spock panted, blinking slowly at him. Jim’s grin grew wider.
“Well, wait until I find your prostate. It’s gonna be mind-blowing.”
Jim was about to dive back in when Bones rolled around to face them again.
“You’re not gonna find his prostate, Jim,” he said. “It’s up near his sternum.” Bones pressed two fingers right below Spock’s collarbones and Spock shuddered.
“Oh.” Jim cleared his throat. “Well, I guess you could reach it through the mouth, then?”
“As if,” Bones snorted. “Your dick isn’t long enough for that.”
Jim looked at the fingers Bones was now stroking Spock’s chest with absentmindedly.
“But yours is,” he said.
Bones pulled his hand back as though he had just been burned and scowled up at Jim.
It was a bit of an unprecedented suggestion, but it shouldn’t have been unexpected, either. Jim had seen Bones and Spock interact for close to five years now, has seen them grow closer, not only through their love for him, but with their love for each other.
Especially after Altamid. He wasn’t sure exactly what happened between them on that planet, but the way they were around each other seemed to have shifted. Still, they clearly wanted to maintain pretences, so Jim had to try and push them a little closer himself. This was a perfect opportunity.
“Come on, Bones, what’s the problem?”
“I’m not sticking my dick in that hobgoblin’s mouth,” Bones announced. “Lord knows he’ll probably try to bite it off.”
“Bones—”
“I would not try to bite it off,” Spock said indignantly, and Jim was about to say, ‘See?’ when Spock added, “I would not allow it in my mouth in the first place. It is most likely unsanitary.”
“Guys, for the love of—” Jim sighed. “You two need to get over this shit. Everybody knows you’re in love. Besides, if you don’t do this now I’m just gonna ask for it as a birthday present and then you won’t be able to refuse without making me very sad.”
Bones rolled his eyes and Spock lifted an eyebrow, but then they looked at each other and came to the conclusion that it was likely better to give into Jim’s whims sooner rather than later.
“Think you can handle it?” Bones said.
Spock scoffed. “I have perfect control of my bodily functions. I will certainly experience no trouble taking you.”
“We’ll see about that.” Bones got up, stretching his arms over his head in a way that made his sleep shirt raise just enough to show a slither of skin above his boxers. With a swift movement he removed both the shirt and his underwear, and stood as naked as Spock and Jim next to the bed. “Well? What are you waiting for? Get over here.”
Spock complied without complaint, which Bones smirked about. Spock settled on his knees in front of him and opened his mouth as he had often seen Jim do when he was in a particularly obedient mood.
“Good boy,” Bones praised, grabbing his cock in his hand and slowly stroking it awake, his other hand chording through Spock’s hair. Jim shimmied closer to the edge of the bed so he could get a better look.
Spock’s cock, that had previously began to emerge thanks to Jim’s ministrations, was proceeding in its way slowly out of Spock’s body. Despite the lack of sexual contact between them, Spock was clearly enjoying it, if merely for the degradation that came with his position.
Bones rubbed the head of his penis against Spock’s lips, then slowly allowed it to slip between them, even though he wasn’t fully hard yet. He always liked starting while still partially soft, allowing the throat to acclimate around his girth much like he would when prepping an anus.
“There you go, Spock,” Bones cooed as he pushed more of his dick inside. “Good job.”
“How come I never get praise like this?” Jim whined.
“Cause you’re a brat, and brats don’t get rewarded,” Bones snapped back. Jim stuck his tongue out at him, but that couldn’t hide the way his dick twitched at the words.
Bones let out a sigh as he bottomed out. Spock’s eyes were half-lidded, his breathing labored yet even as he sucked air around the large obstruction in his throat. When he swallowed, Jim could see the swell of Bones’s dick in his throat.
“Holy shit,” Jim breathed, and Spock moaned in agreement.
“You better start sucking if you want me to get hard enough to actually hit it,” Bones said, and Spock instantly did as he was told, like the good boy Bones praised him as.
“There, just like that. Learned how to suck dick from our own little Jimmy, haven’t you?” It was truly amazing how Bones managed to degrade Jim while praising Spock, and even more so that they both clearly became even more aroused from it. Jim gave up the pretense and finally wrapped a hand around his cock, giving it a few slow jerks just to alleviate the pressure, and Spock’s dick was almost fully out, his genital sheath leaking furiously, the fluid beginning to drip to the floor between his knees.
“Tilt your head up,” Bones said, shifting along with the movement, and Spock’s eyes fluttered shut as Bones finally reached his full size. “I’m gonna start moving now. Don’t forget to breathe.” Spock made an indignant sound which was lost in a moan as Bones began pulling out slowly.
He pulled out all the way, until just a string of spit was connecting his dick to Spock’s lips, and Spock’s breaths rattled. Then, just as slowly, Bones began pushing back in, Spock’s jaw opening wider to accommodate his now-full size, his head tilting back to give it more room, easier access to the recesses of his throat. Jim watched, mesmerized, as Spock’s neck bulged out where Bones’s dick pressed against the underside, the head disappearing behind the swell of Spock’s upper chest and collarbones. Bones pulled out again, only about halfway this time, then pushed back in, a little faster than before. He continued doing that, picking up the pace slowly, until Spock cried out, his voice barely muffled even behind the sheer size of the meat in his mouth, and his dick jerked to full mast, the knot beginning to form at the base.
“Hit it?” Bones asked with a smirk, and Spock gurgled something unintelligible, his eyes fluttering shut.
Bones continued thrusting, shifting his angle until he was hitting Spock’s prostate dead on with almost every thrust. Spock was reduced to an incoherent mess, his dick jerking with each thrust, more of his natural lubrication pooling between his legs.
Jim couldn’t take it anymore. He slid off the bed and slotted himself on the floor beside them, and leaned down to mouth at Spock’s base. The juices flowed freely onto his tongue and into his mouth even as Spock’s knot continued to swell, blocking the opening. Jim’s two hands couldn’t wrap fully around it, but they sure as hell could pleasure the rest of Spock’s dick.
Spock sobbed as a particularly hard thrust lined up with Jim teasing the underside of his head, and came.
Jim had never known him to come so fast unless he specifically asked for it. Even with the rimming from before and everything now, it seemed like awfully little stimulation for the normally stoic and controlled Spock.
With three jerks of his own dick, Jim followed Spock into oblivion.
“There, there,” Bones cooed, pulling his still hard dick from Spock’s mouth. “You did amazing, darlin’.”
Spock whimpered and Jim whined. He wasn’t as wrung out as he usually was at the end of one of their joint sessions, having spent most of it on the sidelines, but that was still a fairly intense orgasm. Spock was fully out of it, rocking slightly as the tears dried slowly on his face. Bones sat on his knees next to them and stroked Spock’s hair, pulling him against his chest.
“So good, honey. Just breathe. Take your time coming down.”
After a few more minutes Spock’s breath had settled, though his eyes were still clouded. Bones picked him up and placed him on the bed gently while Jim went to the bathroom for a towel to clean them up with.
“Do you want me to take care of that?” Jim asked, jerking his head in the direction of Bones’s still hard dick.
“Nah, it’ll go down on its own.”
“You sure? After something like that, I’d thought you’d want to get off.”
“I don’t want to leave Spock alone in case coming out of subspace is hard on him.”
“Awe, Bones, you really do care!” Jim teased.
“Shut up!” Bones hissed.
“Never. Not until you confess.”
“What, you want me to say I love the damn hobgoblin?”
“Yes.” Jim’s eyes glittered.
Bones sighed. When he spoke again, his voice was soft. “Yes, I love Spock.”
Jim grinned.
“I hold much regard for you also, Leonard,” Spock’s tired voice sounded, and Bones twisted around to face him so quickly that Jim would have thought he’d get whiplash.
“Damn you both,” Bones grumbled. “I hate you.”
“Nah, you’re just grouchy. Now, who wants breakfast?”
Both Bones and Spock stared at him, bewildered.
“What? I’ve been up for, like, two hours. I’m hungry.
Bones laughed, and even Spock gave a fond yet tired smile.
“All right, kid, we can go get you some breakfast. And you,” he turned back to Spock, “are going to stay in bed and hydrate. That orgasm took a lot out of you. Doctor’s orders.”
“Yes, Doctor,” Spock sighed.
“And yes, I do love you,” Bones said, the gruffness fading a bit from his voice. “Both of you. Even though you’re menaces to society.”
“We love you too,” Jim said. “Even though you’re always grumpy.”
“And incredibly irritating,” Spock added.
“And demanding,” Jim said.
“Look who’s talking,” Bones retorted. “Damn drama queen.”
“And you love me for it.”
“I already said I did.”
Jim grinned, Bones rolled his eyes, and Spock’s mouth twitched in an almost smile. They were finally whole.