"Is that a challenge?" Otto growled, barely looking up from the drink held in one of his mechanical arms. You could hear his quiet interest over the chatter of the TV in the living room. "Not at all, I was just asking... you're getting a little too good in bed." You spoke up, feeling his gaze, and tried to give more explanation. "You, and your wonderful arms always work so hard to take care me... And its great... but every time I try to 'take over,' you somehow manage to gain the upper hand." You chuckle at how you phrased it, like it was a tactical move. "I think you're cowardly, Otto Octavius; I don't think you can let anyone else be in charge." You sighed, struggling to find the right thing to say to your boyfriend, slowly getting more sultry as you went on with your 'speech'. "And what better way for you to put your trust in me than to... let me put something of mine in you?" You clenched your teeth, fumbling what little poise you had left. The scientist chuckled.
Mechanical whrring could be heard as his top right actuator nudged you closer him on the couch. "But it's so much more fun the way we normally do it. Every squirm, every twitch, every sound that comes out of your handsome mouth; it's all my doing." Otto caressed your face as he catalogued, then turned to face the TV, the light sparkling off his dark brown eyes. "Are you saying you'd want to do something like that to me?" As Otto looked at you with a faint smirk on his face you felt 2 feet tall. He made a good case. Otto was an experienced top and you weren't. You wanted to step out of your comfort zone and taunting was the only way to get the doctor out of his. Gathering yourself, you decided to double down, lifting your head out of Otto's large hands. "Just give me tonight, Otto... show me you're not such a control freak, and let me have some fun for once." Otto thought for a second.
"I'll take you up on your offer, y/n... I'm confident you'll be able to guide me through everything." Otto leaned over your shoulder and batted his eyes jokingly. Your heart rate pounded, he knew what he was doing, but you decided to put things on hold until you were properly focused. Pushing Otto off of you, you nudge one of his extra arms away to get off the couch. "Calm down honey, I said tonight, so we still have a few hours. I'm gonna go shower." Otto watches you clumsily try to swivel your hips, giving him a show while walking away. After your shower, you went to the bedroom and changed into a pajama flannel shirt and some old shorts. You placed a bottle of lube on the night table. It was large, though only half full since Otto had been using it for you, but you'd be using it for him tonight.
Before you two started, you guided Otto through getting ready and sent him to the restroom while you sat, legs crossed on the edge of the bed. When Otto came back, he leaned against the door frame; He was wearing a tight tank top that covered his arms' harness and loose jeans. "Y'know if we're going to do this, you're gonna have to get closer to me, Otto. I don't bite." The doctor turned away from you, holding his tongue. You ask if the preparation made him uncomfortable enough to stop, but he just shook his head, acknowledging the foreignness of the situation. Getting up and walking to the doctor, you reach out for his hand to lead him to the bed. Otto made a sad puppy dog face, so you leaned in to kiss him as encouragement. Big mistake.
In an instant, the doctor was all over you, his top right mechanical arm pressing you into him yet again. Otto soon took over the kiss with his tongue tangled all over yours, and he grabbed onto your hips. With all of the movement, you started to lose track of time, but then you heard a bump to your right. Another of Otto's aculators was trying to swipe the lube from the nightstand. You quickly back away, swatting at Otto's hands, and he sheepishly smiles at the sight of you angrily crossing your arms. "You sly dog! Do you really want to do this, Octavius? Actually, if we want to do this 'experiment' correctly, you're gonna have to deactivate the arms. It's entirely up to you." Your assurance shone through as you walked back to sit on the bed. Otto sighed, curling his extra arms up behind his back and putting them into 'sleep mode'. You smiled and patted the matress, and he sat next to you. The bed creaked as you moved closer to the doctor, prompting him to lean back against the headboard.
You situated yourself between Otto's thighs and supported yourself with your arms on either side of him. The two of you went back to making out, the noises of shifting and heavy breathing filling the air as you rub against his thighs. Otto pushed your chest away, a distant expression on his face. "Are we just going to kiss all night? I thought you were going to show me a good time." You huffed and scruffed up Otto's fluffy hair. "All right, then, let's get this show on the road. Just sit back, relax, and let me take care of you, honey." You try to sound sexy, but the sentence itself wasn't exactly 'hot'. the doctor chuckles, causing you to flush slightly. You ask him to remove his tank top as you lean down to take off his jeans, perking up seeing a small bulge in the doctor's boxers. "Do you like what you see?" Otto inquired. "I always do Otto, you're gorgeous, head to toe." The doctor quietly muttered a thank you in return.
You had a burning need to explore; to play with your boyfriend's body in ways he wouldn't normally 'allow' and you knew exactly where to begin. Grabbing for the doctor's chest, you move closer to him, practically sitting on his lap. With your left hand you gently and calmly grab his fattened pecs and Otto immediately reaches for your hand. "Ah-" "Do you like that?" "Actually, huh, I think I do." "I know what I'm doing. Just put your hands away, you can trust me." Trying to test Otto's limits, you started pinching around Otto's nipples and slide down his thin bear trail, massaging his belly.
You take in the doctor's familiar scent, getting hard as you grind your groin into Otto's. He tried to keep his cool, limiting his sounds to low-level 'ahhs' and 'oohs', but you could see his face slowly twisting into pleasure. "It's okay to admit you like this, Otto; Am I not doing a good job?" You pout, but prove your worth by stopping the caressing, leaving the doctor unsatisfied. Otto sits up and reaches towards the nightstand. "This is exciting and all, but you mentioned you wanted to put something in me?" Otto held up the lubricant. "As you're probably aware, I've never been much of a foreplay man." You stifle a sigh. "I know, but I thought t- the other way around... Y'know what, nevermind." You cleared your throat, standing up. "Alright... On your knees Otto Octavius, and bend over while you're at it." The sterness in your voice made Otto jump a little. "I like seeing this demanding side, y/n. Can I see a little more?" You thanked him as you unbuttoned your flannel, Otto taking in the sight of your chest before turning away to his hands and knees while still on the bed. Taking the elusive bottle, you squirt lube over your fingers. Otto's leg muscles clench as he hears the sound, but you ask him to relax.
You lower Otto's boxers to reveal his beautiful ass; It was thick and perky, with sparse strands of dark hair scattered throughout just like his legs. Telling him how much of a view he is causes the doctor to fluster. You spread his cheeks apart and place a few lubed fingers on his entrance. As the doctor lets out a quick squeak, you pull back, apologizing. "You didn't like that, did you?" You ask nervously as Otto turned his head to you."It just... It just caught me off guard." He held back his criticism, but you understand. "Maybe you should try only one finger? That's where I started with you." You nod, remembering the first time you and Otto had sex. He was extremely patient with you, and you wanted to offer Otto that same patience.
Trying again, you softly rub one finger around and then in Otto's asshole. "I'm sorry its cold. H- how does that feel? Are you... okay?" You asked, more anxious to do everything right. The doctor was uncharacteristically quiet. "Yeah, it just feels strange, but not uncomfortable." Otto smiled tiredly. "You don't have to be gentle with me, love; I trust you. Just go a little slower with me, I'm new in this area." What Otto said encouraged you, and you started to finger him sensually, stroking the warm, rippled flesh of his insides and gradually adding fingers along the way. "Fuck." Otto grumbled. "Was that a good 'fuck' or bad 'fuck'?" "A neutral one." "Well, not everything feels amazing on the first try. Hmm... let me try something else." You stopped fingering Otto up, and turned your fingers down, trying to probe his prostate. Your fingers hit it after a few jabs, and Otto's small dick twitched as he let out an exclamation.
After a few moments, you decide it's time for something a little more and you carelessly pull out and wipe your fingers on your shirt. "Do you think you're ready for something bigger?" you ask shyly, the question unfamiliar to you. "You know, like- like my cock." You say bluntly. Otto sat up awkwardly, running his hands over his newly slick ass. "You did just fingerblast me for 10 minutes, so I guess I am. Show me what you've got." The bed creaks again as Otto slides back onto his hands and knees, this time raising his hips higher, encouraging you in. He asked if he was going to stay in a bent down position, and you tilt your head. "Is there a problem with that, doctor?" "Well, if you don't mind my input, I'd like to be able to see what hot expression you make when I make you cum in this way." Otto mewled deeply, turning away from you. You commended his attempt to wrile you up, and reveal your ulterior motives. "Let's just say its better if you aren't looking my way." To be honest, you wanted to catch him off guard, watch his charisma melt into submissiveness, so you thought it would be better if he couldn't see what your hands were doing.
Taking your cock out of your shorts, you lubed it up and climbed back into bed; Keeping Otto's hips steady as you placed your tip against his asshole. You slid in halfway, not wanting to 'rip' the doctor open with your lengthier cock. "Are you okay? Sh- should I move?" You asked stressfully. Otto shuddered, but tried to remain calm. "I'm fine; it's not like this is my first time having a dick in my ass." Otto laughed, and you could feel the vibrations of it. He purposely joked to reduce some of the pins and needles you were experiencing, and you giggle, reaching across the doctor's coiled aculators to fluff his hair. Otto continued. "Yes, y/n, you can move. You've got me on my hands and knees, love... Isn't that enough for you to know tonight I'm all yours?"
You gripped the doctor's thick sides, your hands heating from the softness. Otto groaned quietly as you started to move foward; he squeezed around you, allowing some of the lube to escape and drip down your dick. You remembered how he reacted when you fingered him, so you pull his heavy hips up so you were better positioned to strike his prostate. "Woah- Keep doing that... Can you go a little faster though?" Otto slurred and asked. You noticed that he was trying to regain control, but his encouragement caused you to move your hips quicker anyway, the crisp and bitter smell of sex intoxicating you. You tried to lean over the doctor, but it was difficult since you were shorter and the mechanical spine is pretty solid. Otto assisted you by arching his back, and you plant kisses along his neck, resting your face next to his left ear.
"Would you moan for me, Otto? Please? Prove to me you're having a good time." Otto huffed and shook his head naively. "Not until you've moaned for me first, love." The doctor's stubbornness forced you to go on the offensive, so you let go of the doctor's hips to explore with your hands again. The hands quickly went back to their previous positions; one over one of Otto's breast, and another over the stretch marks on Otto's descended stomach. He clenched around you, unaccustomed to being stimulated in so many ways, and it forced you to slow down. You struck the last nail in the coffin by nibbling on the scientists' left ear. "Nngh- y/n please..." The doctor pulled away, trying to hide his cry. "Did I just hear you moan my name? Otto... Are you having a good time?" He didn't respond, so you tangled your hand into his hair to lift his head, making the doctor quickly submit. "I- I am. I'm feeling so good, God, just keep doing what you're doing." "As you wish."
With your goal finally achieved, you relaxed and started to have fun. You thrusted faster inside Otto as both of your thighs start clap together, touching all over his body, nearing climax as your heartbeat got louder and your hearing started to ring. The doctor finally stopped talking, only communicatung through whimpers and moans; his enjoyment and desperation showed through as he even tried to grind his hips against yours. You suspected Otto wasn't as close to orgasm as you were, so you reached over and under him to his hard dick, hand brushing over his scant pubes while grabbing the base; It wasn't very long, so it was easy to stroke. After grazing your thumb across his foreskin, the doctor let out an especially loud moan. You praised him on the volume but it only made him blush even more, you could tell as his ears had turned red.
Otto must've been further along than you imagined, as it didn't take long for him to cum onto your hand. He shook as you stroked and talked him through his orgasm. "That's it, Otto, That's a good boy." The doctor exhaled heavily, unable to speak, and he glanced back at you as drool fell from his open mouth. You take your cum-covered hand and laid it sloppily onto Otto's sides, and seeing his red-faced, messy-haired apperace pushed you closer to the edge. "ah- oh Otto... I'm gonna cum, can I-" He hissed a 'yes', and you instantly hit your own high, tears welling up, a grasp on Otto's hips firm enough to bruise. As you filled his hole with cum, the doctor's hot insides continued to pulse against your dick.
After you pulled out, a mixture of cum and lube trickled out of Otto and down his perineum. The sight was so hot that you felt like you could climax again. You checked the nightstand clock and notice it'd been 22 minutes since you and Otto's little 'adventure' began, and you marvelled at how he'd managed to stay on his hands and knees for so long. As if on cue, he buckled under his unstable weight, and you fell down with him, landing not so gently on his mechanical spine. You tried to shift and move to the left side of the bed, but Otto's mechanical arms block your way, though they shifted to make place for you. You glare at him as you lay down. "They probably turned on when you were leaning over me." Otto grinned wryly, and you looked at him with skepticism. "They were in inactivity, I... I promise." He sat up, semi-thick fluids making a mess of the mattress, and tried to distract you; he looked back as his legs, covered in fluid, and swiped it with his fingertips. "Wow, you really let me have it, huh? Should definitely clean up." You got up beside him, pulling off your flannel shirt to wipe down the doctor's leg, tossing the shirt to the floor.
Otto gives you an extended look, seemingly taking a mental picture. "Y- you did... amazing, by the way. I think I like this new side of you..." You'd never heard Otto speak so softly. "I like this new side you too, honey." You smiled, chuckling as you lunge at the doctor and grab him in a bear hug. Otto joins you in laughs, and quickly invelops you. There was a primal happiness in your ear as you buried yourself in your boyfriend's thick, soft, and warm chest, kissing all over his face. "See Otto, I told you all you needed to do was lose control."