“Lord Megatron is indisposed,” Optimus tells the glaring mech who’s come to the door, seeking to bother Megatron for whatever reason. Said mech looks like he’s going to barrel inside no matter what Optimus says, so he blocks the opening with his own frame.
“Is it urgent?” Optimus asks, planting his feet in the face of a Decepticon who’s half-again his height, with a narrowed visor and a clenched jaw. The badge on Optimus’ chest still gleams fresh like new, though it’s been years since he accepted it.
“None of your business, scraplet,” the Decepticon snarls, a mech whose designation Optimus doesn’t know. Mystery mech must be new to the ship, and clearly has lost control of his faculties if he thinks pushing Optimus around is the way to get what he wants.
He must not have gotten the memo.
Optimus sends out a ping, and the mech’s ident code flashes across his cortex — Slapdash.
Optimus lifts his chin. “Slapdash,” he says, and takes great pleasure in the mech’s visor flashing with surprise, his field briefly alarmed. After all, only a Decepticon commander could have read his ident code. “I’ll make sure to remember you the next time General Strika needs volunteers.”
All of the color nanites drain from Slapdash’s face. “You… you’re a commander,” he says dumbly.
Optimus smiles and says, “How kind of you to notice.” He tilts his head. “I was also in the middle of something, so if this isn’t urgent, I suggest you make yourself scarce.”
“Y-yes, sir.”
Slapdash makes a sound Optimus would call a squeak and whirls away from the door, scuttling away with what little dignity he has left. Optimus allows himself a tiny smirk before he shuts the door and wipes his face back to neutral.
Megatron can be too perceptive for his own good and right now, Optimus is the one with the lead, not his mate. He can’t give Megatron so much as an inch.
He returns to their berth room at a reasonable pace, trying not to appear too eager though his spark is awhirl with excitement, and there’s a steady, volcanic throb through his lines. Stowing his spike had been a challenge, and Optimus wants nothing more than to free it again, but that would be getting ahead of himself.
The scent of arousal slams into his olfactory sensors, and a shudder runs through Optimus’ frame. He slips into the room, locking the door shut behind him, and drinks in the view.
Megatron, kneeling on the floor for Optimus’ pleasure, his wrists bound above his head from chains attached to the ceiling. The spreader between his knees keeps him carefully balanced, with more than enough room for Optimus to slide a hand between Megatron’s thighs, to cup his swollen, dripping valve. It’s left a puddle on the floor, one that’s been steadily growing over the past hour.
He’s shaking, optics dazed, little zips of charge peeking out from his substructure, caught in the pleasure loop Optimus initiated when their door pinged. His cables hang loose — considered quite lewd in polite society — since Optimus had to hurriedly disconnect. His lips are parted, swollen, slick with lubricants, and Optimus swallows over a lump in his intake.
He’d been happily seated within Megatron’s mouth when they were so rudely interrupted, nestled and warm and cozy for the better part of twenty minutes while he wrecked havoc through their cabled connection.
“Sorry,” Optimus murmurs, and Megatron tries to focus on him while a surge of charge dances over his armor. Another pearl of lubricant drips from his valve. “Someone was under the impression they could demand a moment of your time. They didn’t realize it belonged to me.”
He cups Megatron’s head and shivers as Megatron turns into the curve of his palm, nuzzling it. Ex-vents burst warm and humid over Optimus’ fingers. If he curves his smallest finger down, he can brush the warm metal of Megatron’s collar, put in place by Optimus’ hand at the beginning of their session.
“I’m going to reconnect.” Optimus reluctantly draws his hand back and reaches for Megatron’s cables, unspooling his own at the same moment. “Any objections?”
The low rumble of Megatron’s engine sings approval. He squirms in his bindings, making the chains creak a warning. Optimus glances at the ceiling, but the mounts hold firm. He’s more than aware that Megatron could break them without much effort.
Optimus carefully connects them once again — fumbling briefly at finding the right match, Megatron is much older than him. The moment the connection snaps into place, a roaring inferno of lust pours across the link. Optimus’ knees wobble, and he has to grasp Megatron’s shoulder to steady himself. He squeezes, spike emerging in a desperate pop he can’t even pretend was intentional.
Optimus groans, his spike throbbing, beading at the tip with pre-fluid. He grasps himself, squeezing at the base, as he tries to control the torrent of lust and need surging from Megatron. His other hand digs into a shoulder seam, pinching at cables beneath, and the brief tic of pain he registers is quickly swept away in the hungry tide.
“Let me finish,” Megatron rumbles, his oral vents hot and near to Optimus’ spike, which twitches hopefully.
Optimus looks down at his pet and raises both eyebrows. “Was that an order?”
“A request, sir,” Megatron replies, his tone silken, his glossa dragging over his lips. “Please.”
“Sure,” Optimus says, like his spark isn’t beating twice as fast, like his spike isn’t already aiming itself back into Megatron’s mouth. “Since we were interrupted. I suppose that’s only fair.”
Megatron rumbles, but if he has something disrespectful to say, it’s muffled by Optimus’ spike sliding past his denta, across his glossa. It just barely nudges the back of his intake as Optimus buries himself to the root, fitting perfectly within the space of Megatron’s mouth. They both moan, and the vibrations of Megatron’s vocals make Optimus’ knees threaten to give.
He grasps Megatron’s head with his free hand and bottles up his own lust, shoving it down across the link. Two can play this game, and when it hits Megatron, something not unlike a whine rises in Megatron’s chassis. His arm mount click-clicks, trying to activate a fusion cannon that isn’t attached, in a desperate bid to shove the energy somewhere.
“Good,” Optimus gasps, better a moan, as he lingers in Megatron’s mouth for several long kliks before he lets himself move in tiny, shallow strokes across Megatron’s glossa. He never appreciates their height difference more than when Megatron is on his knees, and Optimus can stand and easily feed his spike into Megatron’s mouth.
Or stand over him and perch over Megatron’s face, letting lips and glossa work against his valve. His aching, empty valve. Optimus clenches, feeling the buildup of lubricant behind his panel. He wants to seat himself upon Megatron’s spike, but it’s been locked away for this session, more to keep Optimus from temptation than the other way around. He finishes way too soon with Megatron’s spike in him.
Optimus trembles and pushes into Megatron’s mouth again, pushes as deep as he can, and lingers, lets himself pulse and throb on Megatron’s glossa. Looks down and sees Megatron looking up at him, crimson optics hazy, expression slack with satisfaction even while his frame twitches in the chains. His hips start to rock on nothing, valve drip-dripping to their floor in lurid splashes. There’s an urgent desperation in their link, but Megatron would never ask for it.
He wants Optimus to let him have it.
Optimus curves a hand over Megatron’s helm, stroking the strong lines of it, the sharp curves. “You’re so good at being patient,” he gasps, though he’s aiming for a croon. He’ll get better at it. “You can hold on longer, can’t you?”
Megatron makes a noise that vibrates over Optimus’ spike. His glossa presses up, pinning Optimus’ spike against the roof of his mouth, and the added pressure makes Optimus groan.
“Y-you’re strong and powerful,” he stutters out, his spike throbbing, threatening to spill. “You can manage waiting for a little longer, can’t you?”
Megatron’s engine rumbles, powerful enough to vibrate through Optimus’ entire frame. The chains rattle warningly, and Megatron’s lower half rocks faster, the sharp tang of hot lubricant thick in Optimus’ olfactory sensors. Heat rises from Megatron’s armor in waves, the dancing curls of charge paling from blue to white.
Megatron’s close to overload, shaking from the effort to hold himself back, and there, in the spikes of his field against Optimus — pride and satisfaction. He moans around Optimus’ spike, suckles at him, laves his glossa against the head, prodding at the tip.
Optimus’ knees tremble. He’s the one struggling to hold on now. He’s the one who can barely keep himself from spilling, and that’s not… right now. It’s not what Megatron asked of him.
Optimus groans and shifts back with sheer force of will, his spike sliping from Megatron’s mouth. Megatron strains against Optimus’ hand on his head, trying to give chase, but Optimus twitches his hips out of reach.
“Hold on, you greedy thing,” Optimus chastises as he edges a foot forward to press the quick-release on the spreader bar. It separates in two, allowing Megatron some movement.
“You’ll get more soon enough,” Optimus says as he circles around Megatron – cables growing taut between them – and snags the quick release for the chains, dropping the cuffs from the ceiling.
Megatron’s wrists are still bound, but he can lower his arms now, and he does, a low groan of discomfort welling in his chassis. Optimus is quick to slide his fingers against Megatron’s shoulders, checking the joints for damage or undue strain. Not that Megatron would ever admit that he’s in pain.
It’s nothing compared to battle, he’ll claim, but Optimus puts his foot down. What they do in the berth should never be compared to the blows they’d once rained upon each other when they were enemies.
“Good pets let their master care for them,” Optimus reminds Megatron as a chuffed vent crosses the line into petulance. He slips his hand into Megatron’s right shoulder fairing and rubs over a knotted cable, which loosens under his touch.
“Good masters let their pets serve,” Megatron rasps, his frame radiating large bursts of heat, his need so thick Optimus can taste it.
“Then on your back,” Optimus says with a light push to Megatron’s shoulders. “Spread your legs for me nice and wide like a good pet.”
Megatron’s engine rumbles, vibrating the floor, up through Optimus’ stabilizers. He obeys, shifting onto his back, knees drawn up but feet planted wide. Optimus takes his wrists and presses them to the floor above Megatron’s head, drawing out the lines of his frame in exactly the way Optimus likes.
“Keep them here,” he instructs with a tone that would make his old drill sergeant proud. “I don’t need to tie them down, do I?”
Megatron’s hips make insistent circles, but his optics are narrow bands of hungry crimson. “No, sir,” he purrs, and it resonates right through Optimus’ spark.
His valve pulses; his spike spills a drop of pre that splashes onto Megatron’s cheek. “Impertinent,” he accuses.
Megatron’s look of innocence wouldn’t work on Bumblebee, much less the great Decepticon Commander himself.
Optimus wants to kiss him, but that feels like too much of a reward. But if he’s denying himself? Ahh, the decisions.
He abstains. For now.
Instead, he circles back until he’s once more standing between Megatron’s thighs. He hooks his hands under Megatron’s knees and pushes them back and open, until Megatron’s valve is completely bared to him. Biolights pulse in frantic need, lubricant soaking his swollen pleats invitingly. Optimus’ mouth waters, but if he puts his mouth on Megatron’s valve, that’ll be the end of it. He won’t be able to stop.
Optimus inches forward instead, straddling Megatron’s thighs as they are pushed back, getting himself in a good position to plant his valve right over Megatron’s. He finally lets his panel slide open before he sinks down, and shudders as his own swollen mesh meets with the sopping heat of Megatron’s. He rolls his hips, and their nubs brush together, a brief contact that sends a jolt through Optimus’ frame.
Frag.
He might not be able to hold out himself.
“Don’t… overload until I do,” Optimus gasps out as he tightens his hands on the back of Megatron’s knees and rocks his hips, grinding their valves together, nubs meeting in a slippery slide of electric contact.
A low groan rattles out of Megatron’s intake. He tosses his head back, baring the thick column of his intake and the bright tungsten flash of his collar. Just the glimpse of it is enough to cause a possessive surge in Optimus’ spark, his fingers tightening as if they are strong enough to dent. He swears he can see the reflection of himself in the polished metal.
Optimus briefly laments their size difference because he would love to sink his denta against those exposed cables. To feel Megatron shudder beneath his mouth as he keeps his grip, maybe leaves the imprint of his Autobot-blunt denta there for all to see.
His valve throbs, and Optimus’ head dips as he pants, struggling to hold himself back. Megatron’s valve is so hot, his mesh swollen and plush, soaked with lubricant. He’s venting heat, and each static curl from his substructure is biting at Optimus’ own. His field swirls with want, with how much he’s restraining himself on Optimus’ command alone.
It’s intoxicating.
Optimus rolls his hips, again and again, switches it up by grinding down in little circles, his nub pressing hard against Megatron’s, slip-slipping over it with little jolts of ecstasy through his own sensornet. It’s the wet kiss Optimus wouldn’t give Megatron earlier, every meeting of their sopping mesh, and it’d be hard enough on his own. But there’s a feedback loop here, because Optimus had forgotten to disconnect them.
The cables hang taut between them, and Megatron’s urgency peppers through Optimus’ internals like an inferno. His knees tremble, threatening to topple him, and the tightness in his abdomen builds and builds until he’s overloading, lightning dancing behind his optics and lubricant pulsing out of his valve.
It takes too long for Optimus to realize he’s babbling. “–overload, do it now, pet. You have my permission, let go, give it to me now,” he says.
He forces his optics online in just enough time to see Megatron’s entire frame jerk. His backstrut arches, and he trembles as he overloads, his valve throbbing against Optimus’, charge dancing across his frame in beautiful white curls. Lubricant pulsing out of his valve, spilling out from where they’re pressed together to run down Megatron’s aft in a messy gush.
A raw need jolts through Optimus’ frame. He’s stroking his spike before he remembers putting his hand on it, stumbling backward, stripping himself raw at the sight. Megatron shaking and writhing in overload, arms still perfectly pinned to the floor as he keens and surrenders to it.
He’s the most beautiful thing Optimus has ever seen, and he’s Optimus’.
Optimus gasps and overloads again to that thought, transfluid bursting from his spike in wet stripes over the mess of Megatron’s valve, mixing with their mingled lubricant. Optimus hunches forward, stars dancing behind his optics, as the overload seems to go on and on. Megatron’s thighs clamp against his waist as Megatron rocks and seems to overload again with a deep, bassy groan that vibrates through Optimus’ frame.
Optimus’ knees shake; he doesn’t know how much longer they’ll hold him. He raps his knuckles against Megatron’s knees.
“Open,” he gasps out, and thank Primus, Megatron is coherent enough to obey. His knees slide away, giving Optimus room to move and drag himself up Megatron’s unfairly large frame.
He sprawls across Megatron’s chassis, but close enough to finally treat himself to that kiss he’d wanted earlier. Slow, gentle, absolutely lazy, their mouths move together — Megatron’s lips still swollen from warming Optimus’ spike earlier. Megatron’s frame moves in little twitches and jerks, echoes of the two overloads back to back.
“Good… good pet,” Optimus says, patting Megatron’s chassis with a shaking hand. Beneath him, Megatron’s spark thrums both powerfully and frantically as it tries to cycle down from the exertion.
Optimus imagines the chaotic frenzy inside his own chassis is his spark doing the same.
Megatron rumbles and then his arms come down around Optimus’ torso, wrists still bound, but moving before he has permission nonetheless. Optimus doesn’t have the spark to chastise him for it because a nice cuddle is exactly what he wants right now.
He honestly doesn’t know if he can move.
“Mmm,” Megatron murmurs as he nuzzles the top of Optimus’ head, lips teasing at a finial. “My perfect little Dom.”
Optimus twitches said finial out of reach. “You’re supposed to be a puddle of perfectly satisfied sub, too sated to even speak,” he grumbles.
“I am every bit the first half of your statement,” Megatron rumbles, amusement rich in his voice and pulsing along their connection.
Oh. Their connection.
Optimus swallows a groan and forces himself to rouse. Proper Doms take care of their subs, and that means not falling into recharge on top of their sub who’s still bound and currently lying in a pool of lubricant and other fluids.
He straddles Megatron’s frame, hips splayed wide, and his valve gives a twitch of interest. Not now, he tells the hopeful thing. Perhaps they can play with Megatron’s spike later.
“I’m going to disconnect now,” Optimus says as he reaches for their cables. He waits a klik for Megatron to protest, and when Megatron merely strokes his backstrut, Optimus disconnects them.
It’s disorientating for a moment, his own emotions and needs swirling through his frame without Megatron’s echo to confuse him. He’ll have to work on that, too.
Optimus tucks his cable away, then gently stows Megatron’s as well, his fingers lingering on the panel protecting its housing. “I’m still surprised you let me do that.”
“There are many things you have the privilege of doing to me, Optimus,” Megatron murmurs, his optics dark with emotion as he strokes Optimus’ backstrut once more.
Oh.
Optimus flushes. “Only because I’ve earned your trust,” he says. “Wrists, please.”
Megatron lifts his arms from around Optimus and rests his hands in Optimus’ lap instead, offering his bound wrists. “These are flimsy. We should consider acquiring something stronger.”
“I want you to be able to break out of them,” Optimus says as he fiddles with the catches — they stick sometimes — and the locks pop open, releasing Megatron’s wrists. He tosses the cuffs into the corner where he’ll tidy up later.
“Perhaps I want you to have a pair that I can’t easily escape,” Megatron says, his vocals dropping into a deep rumble that vibrates all the way up into Optimus’ pelvic array.
Optimus huffs and takes Megatron’s wrists, inspecting them for damage, though he can’t find so much as a nick in the paint. “You and your escalation,” he grumbles as he slips his fingers into the gaps of Megatron’s wrists, seeking kinked or knotted cables. “Any pain?”
“No,” Megatron says, though again, his idea of what constitutes pain and Optimus’ idea tend to vastly differ.
“Good.” Optimus scoots down and removes the spreader bar, tossing it in the corner to join the cuffs. He examines Megatron’s ankles — and here he finds a few paint scuffs, but nothing he can’t buff out on his own — but again, no damage.
Megatron had not struggled over much. Perhaps because he’s aware of how delicate their toys are. Optimus had insisted on it; Megatron had eventually relented. Optimus suspects he’ll keep pushing, however, and Optimus knows he’ll surrender at some point.
Optimus rises to his feet, ignoring the wobble in his knees. He nearly slips in a puddle of lubricant, and his face goes hot. “We made a mess,” he says as his finials twitch. “I’ll fetch the meshwipes.”
A hand encloses his wrist before he manages two steps. “We do have a private washrack,” Megatron reminds him with that bassy purr which never fails to make Optimus weak all over.
Optimus pointedly glances at the collar still decorating Megatron’s intake. “Technically, I’m still in charge,” he says tartly.
“Of course. My mistake,” Megatron says in a falsely demure tone, his optics lowering but his thumb rubbing soft circles on the inside of Optimus’ wrist. “If it pleases sir, I deserve a lengthy soak for my obedience, do I not?”
Inwardly, Optimus sighs. How Megatron manages to be both subservient and bossy at the same time, Optimus will never understand. It must be a special talent, a charisma Optimus has never managed to foster in himself.
“You were reasonably well-behaved,” Optimus says as Megatron’s lips quirk toward a smug grin. “Washracks it is.”
Also, this means he can get them both cleaned up easier, and activate the cleaning drone to get the mess on the floor. It’s less work for Optimus all around.
“Knees,” Optimus says, pointing to the ground in front of him.
“As you wish.” Megatron’s thumb rubs over his inner wrist once more before he releases Optimus and shifts to his knees, his gaze never leaving Optimus.
A shiver runs through Optimus’ lines. This will never cease to arouse him, even more with the sight of his collar around Megatron’s intake. A collar Optimus had designed and commissioned, but etched the glyphs with his own two hands. He runs the pad of his finger over said glyphs, and Megatron’s optics go coal-fire dark.
“Leave it,” he rumbles.
“Not if we’re going into the washracks. The solvent could ruin it,” Optimus says. His fingers find the hidden catch and the collar tumbles into his hand, leaving Megatron’s bared intake free for him to stroke.
Megatron’s engine rumbles, his optics half-shuttering.
Primus, they’re going to get started all over again if Optimus isn’t careful. He reluctantly takes his hand back, stows the collar in his subspace, and steals a kiss. He cups Megatron’s face, pressing their foreheads together.
“Session over,” he murmurs.
“Then you cannot protest when I do this,” Megatron says, surging to his feet with all of the preternatural speed that never ceases to amaze.
Optimus yelps as he’s hauled off his feet and swept into Megatron’s arms. “Can’t I keep some dignity!”
Megatron nuzzles him. “Is this not dignified for you?” he asks as he carries Optimus into the washrack, setting the sprays to action with an elbow, and pinging the oil baths to begin filling. “It’s not as if anyone can see you.”
He has a point.
Optimus’ indignation wilts. “At least let me wash you. I want to have some semblance of control here.”
“Of course.” Megatron sets him on his feet, within arm’s reach of their supplies, though his massive frame blocks the solvent spray.
As it always does.
But if Optimus tries to move in too much closer, he ends up with a face full of solvent spray, and that is only ever hilarious to Megatron.
“I’ll need to buff out a few scratches when we’re done,” Optimus says as he starts to work, beginning with Megatron’s feet and frowning over a scrape he hadn’t noticed on his first inspection.
“My nanites will have those gone by morning. They’re of no concern,” Megatron says with a dismissive wave. “Who was at the door?”
“No one of importance. Strika will handle it,” Optimus says, equally dismissive. Perhaps one day he’ll be able to make Megatron understand why even the minor damage is important to him.
Megatron makes a non-committal noise, and Optimus need only look up to see the conclusions Megatron has drawn all on his own. While there are very few who would openly defy Megatron, his choosing to not only accept several Autobots into the crew, and then mate one of said Autobots, has been a point of contention.
“This session was quite clever, Optimus,” Megatron says instead as Optimus’ cleaning takes him upward, to the lubricant and other fluids staining Megatron’s thighs. “I look forward to what you plan for me next.”
“You mean you want me to be rougher,” Optimus says.
Megatron’s finger tips under his jaw, and Optimus has no choice but to look up into his optics. “I wish you to be whatever makes us both comfortable.” His lips quirk into a soft smile. “I clearly enjoyed myself tonight, did I not?”
“We both did,” Optimus agrees.
“Well then, clearly nothing is lacking,” Megatron says, and bends down for a kiss sweet enough to heat Optimus’ cheeks. “And I am delighted to see where your creativity takes us.”
Something with a gag, Optimus thinks.
“Just you wait,” Optimus says. “I’ll have you begging in no time.”
Megatron chuckles, dark and sinuous, and says, “You are certainly welcome to try.”
***