Work Text:
You knew that what you were doing was stupid. So very incredibly stupid. Foolish, idiotic, no other femme- bot or con- would dare to play the game that you had been playing for two years now.
The Decepticons and the Autobots were in the middle of the Great Civil war. It was Decepticons versus Autobots, Megatron versus Ultra Magnus, and the entire planet of Cybertron was split aside from a few small, rural, neutral areas that still remained- one of which you’d been created from a protoform and raised by your loving caretakers in.
You drifted away from your creators to build a life for yourself as a weapon-maker and ended up in business with Ultra Magnus. That was fine enough, but then Megatron wanted your work as well, and he paid more, so... Really, you had begun to play them both, ultimately costing both factions money since they were just mass buying your weapons and using them against each other, which resulted in them needing more weaponry to keep up. You were rich and comfortable, able to provide for your creators as they grew older, and that’s what mattered.
But then it got worse. You didn’t think what you were doing could’ve got worse, but it did.
You couldn’t deny that they were both attractive. Megatron was a gritty, unconventional sort of attractive that drew you in; he had a giant frame, looked at you in an unabashedly sultry way that made you blush, and his voice got to you. Ultra Magnus, however, was attractive in a softer way; large but not overbearing, subtle and kind with a calming voice. He was always polite and sweet with you, and you didn’t want to ruin that, nor did you want to ruin the flirtmance you’d developed with Megatron.
So, why were you doing this? You asked yourself that constantly.
You’d started following them around. You weren’t sure when it started, but after moving from your rural hometown to Autobot City, you didn’t have much to do; no friends, no family nearby, no hobbies that kept you occupied. Eventually, you ran out of work, and when that happened, you kept yourself busy by stalking the two mechs- whichever one you could find out the whereabouts of at the time.
You hadn’t been caught yet- or so you thought- but now... This was different.
You were used to following them when they were separate.
Right now, they were together, Megatron pinning Ultra Magnus to the edge of his berth with a knee between his legs. You didn’t know how you stumbled into this- all you’d done was show up Ultra Magnus’s private home in its secure area of Autobot City to watch Ultra Magnus through his window, having heard that he was home for once. Your stalking was questionable, but no one had to know... Or so you thought. You wondered if you would have to barge in and split the two up, wondered why they were fighting in the middle of Ultra Magnus’s h- oh, Primus, they’re kissing.
You blinked at that from where you were perched up on the window with neither of them having noticed you. You were careful to hide yourself the best you could with one of the curtains, and you couldn’t help but think about how stupid the Magnus was to just leave his window completely open with nothing but two measly curtains protecting his gorgeous form from the outside world. The two mechs grew increasingly heated with Megatron lifting Ultra Magnus and tossing him onto the mattress, then crawling over him. The logistics of it all missed you as you clenched your thighs together, terribly turned on at the sight. The two mechs of your dreams were here in the flesh about to interface, and you were about to get to watch it...
But then, Ultra Magnus was suddenly pushing Megatron off of him and storming over to the window. You jumped to climb down in a panic. Before you could, you were suddenly snatched up by your arm and effortlessly lifted into the bedroom, then set on your stabilizing servos with Ultra Magnus’s digits still firmly clasped around your wrist.
"Let go of her, Ultra Magnus, I believe this is a matter for me to attend to."
"Oh, is that so, Megatron?" Ultra Magnus quirked an optical ridge at Megatron and stopped but was sure to stare you down to make sure that you didn't dare move. "And what could you possibly have to do with (y/n) here?"
"You realize she's been duping us both, yes?" Megatron chuckled and stood up from the berth, walking towards you. A shiver of fear and anticipation wracked through your body as he crept up behind you, leaning down far enough for his breath to be on your neck as he caught one of your wrists in his large servo and whispered in your audial. "Regarding us for fools. I was merely putting up with it for the small number of benefits we got from it all in terms of her weaponry, but if she's going to breach our privacy like this, then I'm not so sure we should be merciful with her..."
"Then what do you suggest we do?" Ultra Magnus muttered. You remained in place, trapped between the two- if you moved backwards, Megatron's grip on your wrist tightened and your aft was up against his interface panel, and if you moved forward, your chest and paneling would be right up against Ultra Magnus's. "Imprison her?"
"I see how she looks at us, and so do you, Ultra Magnus. Don’t act stupid," Megatron breathed, practically mocking you. You flushed in humiliation. Had they known about your lust for them the entire time? Were you not as good at hiding it as you thought? Did they realize how you’d been following them for months now? "I have a better idea for her... Punishment."
"W-Wait, aren't either of you going to ask me what I think about this?" You objected and squirmed, only for Megatron to hold you in place by the arm and for Ultra Magnus's servos to fly to your hips to further secure your position. They held onto them hard, digits leaving heavy dents along your waist. "I'm fully capable of escaping, you know! I could leave at any time!"
"Oh, really? Are you going to act like you don't want this?" Megatron teased and grabbed your other arm from Ultra Magnus, yanking both of them so he could hold them behind your back. You were so much smaller than him that he held both wrists without any effort in one servo. He thrusted his hips forward just enough to rock his interface panel into your aft. It was pressurized, practically ready to pop, and you could only imagine how big his spike was and what it would feel like inside of you. At that thought and the feeling of Megatron grinding into you, you softly gasped. "I don't appreciate when my prey plays hard to get, (y/n). If you want to escape and claim so boldly that you're capable of such, do it. I'll wait. I'll even give you a head start. Run."
"You- I... I, um-..."
“Well? I’m waiting.” Silence. You didn’t move, frozen in place with your spark beating so loud that you were sure they must’ve been able to hear it. "That's what I thought. Now that we’ve got these silly shenanigans of yours out of the way, I expect you to at least be honest with me given all the financial losses you’ve put myself and my lover through. Do you want us or not?”
“I...” You stammered, unsure of how to respond.
“Don’t rush her, Megatron, she-”
“She’s not innocent in this.”
“No, but she does look rather embarrassed...” Ultra Magnus gave a soft frown and reached forward with both servos to caress your cheeks. It was surprisingly delicate and sweet, even more so when he leaned down to kiss the top of your head and talk to you in a low, calming whisper. “My apologies for cornering you like this, dear, I didn’t mean to startle you.”
“I do want you,” You answered, and then gulped. “Both of you.”
You didn’t know what to expect, but it definitely wasn’t Megatron releasing you, only to gently tap a claw against your interface panel and practically chirp, “Open up.”.
Embarrassingly enough, you didn’t even have time to consider it or make the conscious decision to do so- your interface panel opened on its own with a hiss. Your valve was dripping, and your spike was hard and bobbing up against your abdomen. You shuddered as, without much warning, Megatron opened his panel as well and put the head of his released spike against your entrance.
You gasped at the mere size of it, not daring to look by as you were easily lifted by Megatron and carried to the mattress. Almost as if the two mechs were in sync, they watched each other, communicating with their optics what was to be done with you. You were positioned on your forearms with your face down and your aft up, Megatron on his knees behind you on the berth and Ultra Magnus standing in front of you right by the edge of the berth. Once again, Megatron’s spike was brushing against your entrance. You expected him to just shove it in, but to your delight, he shifted downwards, grabbed the backs of your thighs as hard as he could, and ripped them away from each other so he could shove his face in your drenched heat.
“Megatron!” You cried out, adrenaline coursing through your circuits.
He was switching between toying with your anterior node, lapping at your folds, kissing the insides of your thighs, and fucking your valve with his glossa- and oh, Primus, if his glossa was that big inside of you, what would his spike feel like? It felt like it was stretching you out, a bit sharp and thin at the tip but wide and flat at the base. Between work and your hobby of watching them, you couldn’t remember the last time you’d been tended to like this, and the sudden stimulation had you unsure of whether to buck into him or pull away.
You stayed in place and clutched at the bedsheets, helplessly peering up at the mech in front of you. Ultra Magnus stared down at you like you were the prettiest bot in the universe before kneeling in front of the mattress, taking your face in his large servos, and pressing his lips against yours. With Megatron eating you out from behind as if there were no tomorrow and Ultra Magnus nipping at your lip as he passionately made out with you, you were too stimulated to know what you should be doing. So, you bucked your hips back into Megatron’s face and allowed your optics to flutter shut while Ultra Magnus’s glossa explored every inch of your mouth.
Right when you felt your orgasm starting to build up, Megatron slipped his tongue out of you and pulled away. You wanted to whine, to complain, to make him go back to what he was doing, but then-
“Well, lover, you should go ahead and put her to use, don’t you think?” Megatron prompted, which had Ultra Magnus breaking the kiss, looking down at you, and then looking up at Megatron. You simply stared down at the sheets and shuddered in anticipation. “Hurry, now.”
Ultra Magnus listened without hesitation. You realized what Megatron meant when the blue and white mech opened his panel to you to reveal an absolutely gorgeous spike; rock hard, a deep navy blue with white accents, and thick. The Autobot gently parted your lips with the tip of his spike and pushed it into your mouth a little bit at a time- first, the tip and the head, which you ran your tongue along, and then the body, all the way down to the base. You found that you struggled to breathe with it in, but when he pulled back and started gently fucking into your mouth, it got a little easier. You adjusted quickly and began to suck at his spike, too embarrassed to look up at him as you did. You continued to clutch the bedsheets, mouth already sore from your lips being stretched open to take the girth of Ultra Magnus’s length.
You ended up being too distracted by the task at hand to notice that Megatron was getting back up on his knees behind you and firmly planting a servo on your waist. He used the other servo to push his spike into you. It wouldn’t go at first, the force he was using causing the head to glide forward and into your folds and against your anterior node, but with another couple tries, he managed to breach the entrance to your valve with the tip. You immediately teared up because although you were incredibly wet, he was massive, and you hadn’t slept with anyone in Primus knows how long, so it was quite the stretch. The tears welled up in your optics and streamed down your face as he pushed into you. It felt like your insides were rearranging themselves, your valve stretching wide to accommodate the heavy length inside of you. To distract yourself from the pain, you focused on pleasing Ultra Magnus by hollowing your cheeks and swirling your tongue around his spike the best you could as he fucked your face.
“You’re doing so good, (y/n)...” Ultra Magnus panted. His thighs shook where he stood, his face bright red and navy-blue optics hazy with lust when you looked up at him. “Oh, that’s so good, keep going...!”
“You look gorgeous with your holes filled like this,” Megatron praised you and, when you adjusted to his size, pulled almost all the way out before thrusting back into you to the hilt. You moaned around the spike in your mouth in a way that had Ultra Magnus moaning back from the vibrations as you bucked back into Megatron. It hurt, but it hurt so good, his tip slamming against your most sensitive spots and the entrance to your gestation tank. “So desperate to please, aren’t you, (y/n)? Look at how good you’re taking us right now... I think you should get to see, but we’ll give you a little bit.”
You were confused as to what he meant by that, though you didn’t pay it any mind- couldn’t pay it any mind when one of Megatron’s giant servos was on the front of your chest with the other on the bottom of your second, both of them acting to swiftly pick you up. Megatron proceeded to use you like a toy, holding you up like you weighed nothing and fucking into your pliant body. The way he rocked you back and forth had you going up and down Ultra Magnus’s spike, your head still controlled and mouth being used just as much as Ultra Magnus continued to fuck your face, a lot less gentle now.
Ultra Magnus held your helm in one servo and used the other to reach down, his arms just long enough for him to get between your legs and rub your anterior node with his thumb. You jolted, unsure of whether to move towards his touch or Megatron’s.
The Decepticon’s rough, hurried pace did mixed with how you were servicing the Magnus did something to you. Before you knew it, you felt your overload wash over you, your entire frame charged with pleasurable electricity and lubricant shooting from your valve, squirting onto both Megatron and the berth.
You shivered because you didn’t even know you could do that, and now the sheets underneath your body were drenched. Your legs hung limp at your sides. Surprisingly, the two mechs stopped despite not having finished, pulled away. At the same time that Megatron slipped out of your valve and dropped you onto the bed, Ultra Magnus withdrew from your mouth. You gasped for air, overstimulated and mouth tasting of prefluid and lubricant. Your legs and arms were so shaky that all you could do was flop down onto the mattress to catch your vents. Cooling fans kicking on to keep you from overheating, your optics went wide when Ultra Magnus crawled on the bed with the two of you.
They weren’t finished yet, were they? You suddenly remembered that, as Megatron put it, this was a punishment for your scheming behavior and stalking over the years, not a reward.
“P-Please... I’m not sure I can take anymore,” You breathed as you were cornered once again. Ultra Magnus was the one lifting you by your waist now, holding you right above Megatron’s spike- still hard and needy, ready to be enveloped by your heat again. You wondered exactly what Ultra Magnus was going to do aside from watch, but then he was scooting closer, closer... Megatron was in front of you on his knees now, grinding his spike against your entrance and looking down at you with a cocky smirk, his servos moving to the backs of your thighs to push them up and against your chest. Ultra Magnus continued to hold you up by your waist, and oh fuck, he was putting his spike right next to Megatron’s. “A-Ah, wait, it’s gonna be too much...”
“With how wet you are? I think you’ll be just fine,” Megatron challenged and ground his spike against Ultra Magnus’s, which had the Autobot letting out a soft moan and burying his face in the back of your neck.
“You can tell us to stop if you want, though, (y/n),” Ultra Magnus reminded you, and Megatron nodded in agreeance, but you didn’t say anything else. You just shook your head and wiggled your hips to gesture for them to continue.
“That’s what I thought,” Megatron purred and watched your face closely. You went to look away, embarrassed, but then the two mechs thrusted into you without warning. “Look at me, (y/n).”
You did as told, because how could you not? You looked at Megatron just like he’d instructed, a mixture of humiliation, pain, and euphoria coursing through your circuits. You were being stretched further than you thought you could ever be, there were tears streaming down your face, you felt like you were on fire, and you knew that the expression you were making in that moment must’ve been pathetic based on how Megatron laughed at you and thrusted his hips up just a little more to grind into your most sensitive spots.
“Oh, how beautiful it is to make you fall apart like this,” Ultra Magnus spoke from behind you as he nipped at your shoulder. The two were perfectly in sync, creating a perfect rhythm and fucking into you at a slow, sensual pace. It was so much different than what Megatron had done to you before, so much sweeter, and the stark contrast had you gasping for air as their girthy spikes grinded perfectly against each other and against your inner walls. “Primus, can’t tell you how long we’ve been dreaming of having you to ourselves, (y/n)...”
It felt like you were being ripped in half in the best way possible. Ultra Magnus’s spike wasn’t quite as thick as Megatron’s, but it was terribly long, and the mixture of their shared girth and length inside of you was going to leave you sore for days. Still, you tried to grind down to meet their thrusts, your anterior node rubbing the front of Megatron’s panel deliciously every time you want down far enough. The slow and sensual pace eventually became rough and hurried like it had been before. Unabashed moans poured from in between your lips, but they were quickly muffled by Megatron’s lips, which were slammed into yours.
Suddenly, you felt yourself being filled up with liquid heat. Megatron had stopped thrusting while Ultra Magnus continued, the Decepticon groaning into your mouth. He pulled out with a groan, broke the kiss, and spilled transfluid and lubricant everywhere in the process, then flopped back onto the bed and continued to watch you and the Autobot. Ultra Magnus lifted you up more so you were upright with your back flush against his chest and his spike buried to the hilt inside of you, then began to fuck you so hard that you saw stars.
You couldn’t even focus on the mech in front of you, too fucked out of your processor to even keep your optics open now. You yelled, squealed, screamed, and moaned without restraint as you overloaded again, again, again- you weren’t sure where they stopped and where they started or how many you ended up having- all you were sure of was that Ultra Magnus was fucking you even more mercilessly than Megatron had been earlier whilst using the Decepticon’s transfluid as makeshift lubricant, and you were sobbing. Any time that he slowed down, any time that you thought he was going to finish, Ultra Magnus just continued and went even harder.
You were overstimulated, unable to think, sore, and hot, so when Ultra Magnus finally buried himself to the hilt inside of you and filled you up with his transfluid, you let out a cry of relief, what you thought would be your last overload of the night hitting you like a wave crashing into a shore. Ultra Magnus pulled out and released you. Embarrassingly, transfluid and lubricant poured onto the mattress, but you figured that neither of them thought anything negative of it based on how they were still looking at you with nothing but hunger in their optics. You fell onto the mattress just as Megatron had a few minutes before and rested your helm on the Decepticon’s thigh, curling up to him. Ultra Magnus sat down on the mattress as well, and for a little bit, the only noise in the room was that of your heavy vents mixed with theirs.
“S-So, um... The sheets...” You murmured and moved away from the wet spot that you had caused, unsure of where you were going to recharge considering the mess.
Or did they expect you to leave and go back to your own home after this? You shifted nervously, unsure if you could even walk with how shaky and sore your legs and thighs were.
“Oh, we don’t need to worry about that yet, (y/n),” Ultra Magnus reassured you with a soft smile. You blinked your optics, confused. “You aren’t leaving any time soon. We still have all night.”
“What, you thought we were done?” Megatron scoffed at you, and when you looked down, you gulped. Both of their spikes were fully repressurized. “We’re far from it.”
With that, they were moving towards you yet again, and you didn’t dare object.