"Oh god, Paps." The name was almost a prayer. "It almost f-feels like you're fucking me."
Papyrus groaned in response, scrunching his face up and closing his eyes, refusing to look at his brother. Sans couldn't tell if he was into it or not, but you could feel the taller skeleton swell and twitch inside of you as he thrust slightly faster at those words. The movement forced your naked backside against Sans' dick again; it was sliding between the cleft of your cheeks and it felt chillingly good every time it brushed across your asshole.
It had been a long time coming. After much rule-setting and trust exercises, you and Sans had hatched a devious plan.
You had worn down Papyrus' innocent resolve almost every day since he caught you and Sans fucking. The first time had been an accident, but every time after that was not. Almost everywhere Papyrus looked, you and Sans were attempting to seduce him.
Sans would fingerbang you under the table at mealtimes, making you moan so much that the spaghetti would slide out of your mouth in a disgusting display as Papyrus watched, mouth agape at the waste of perfectly good spaghetti.
Sans would massage your breasts while the three of you watched TV, pretending to try and be discrete as you came apart under his touch. Papyrus figured you were just cold, and was sorry he couldn't locate his blanket.
Sans would fuck you against the wall of his bedroom, making sure to pick the spot where he knew Papyrus' bed was on the other side.
He could hear it all.
Papyrus, bless his heart, always averted his eyes when possible. But you would whisper in Sans' ear that you could see the beginnings of a glowing orange erection poking above the waistband of his shorts sometimes, and then it would be Sans' turn to moan. You worked together to attempt to arouse the Great, Unflappable Papyrus, and when his breaking point came he was wordless, passionate, but still reserved.
He had given in. He had walked in on you touching yourself on his bed, and you didn't stop when you noticed he was there. It had been so hot, putting on a little show for him and watching an orange glow form and strain in the front of his shorts. His knees almost gave out when you lifted your shirt above your head to give him a view of your bouncing breasts, and he staggered over to the bed, leaning over you while fisting desperately at his dick. What an adorable expression – he looked almost confused as to why he was even doing it. Why his body was becoming weak and betraying him like that.
You had been the master at first, guiding the virgin dick to your entrance and watching Papyrus' face as you took him in slowly inch-by-inch. He was quite clearly overwhelmed with the new sensations, which was perfect for your terrible plan. Sans had managed to involve himself in the scene mostly unnoticed by his brother, until he leaned over to part your folds, exposing your clit to Papyrus.
"Touch her here, bro." He urged, beginning to pant as he hungrily watched Papyrus' cock slide in and out of you. "It's like a magic button to make her feel even better."
Papyrus was more than eager to touch you, but shied away from his brother's hands, which lead to this interesting 'you-sandwich'. You were sitting, stark naked in Sans' lap, while Papyrus fucked you on his racecar bed.
And oh lordy was it ever doing it for you. Vroom vroom motherfucker.
While Sans was very vocal and affectionate in the sack, Papyrus was turning out to be almost the complete opposite. His thrusts were precise, clinical, and he held back his voice so forcefully that his features were contorted with the sheer concentration this all must have needed. You wanted to see him come apart at the seams, to consume him, and you wanted Sans to help you because you were a kinky bastard. All your moaning and squirming for show might have worked before, but now Papyrus was very much in control and he was fighting to keep it that way.
You leant back against Sans, giving his femur a squeeze with your hands – the signal for him to put the plan into motion. He nodded against your back and cried out in exaggerated pleasure, the volume of the sound making Papyrus open his eyes just in time to see his brother materialise his trademark glowing blue tongue. Sans in all honesty looked cum-drunk; his tongue flopped lewdly from his parted jaw and his expression was contorted in ecstasy. He drooled in an obscene way, the thick globules running down his chin and making him look impossibly erotic. His moans came faster in breathy little pants every time Papyrus thrust into you; you knew he could feel the movement of his brother and you tightened around the throbbing dick inside you in anticipation. Goddamn, you loved his sounds.
"Harder…please, do me harder!" He whined, reaching around you and grabbing onto the smooth hipbones of the other skeleton. He began forcing him to fuck you at an increased pace. Your voice joined him in a crescendo of sexual moans, and Papyrus looked so confused and aroused at the same time that you almost felt sorry for him. His innocence was mingling with his primal desires, and you figured maybe you should help him along even more. You pointedly ground your butt against Sans, discretely trying to force him to lie down, and he got the hint so quickly that you barely had time to wrap your arms around Papyrus' shoulders and bury your face in his clavicle. You and Sans worked as a team; it was almost like a monster battle. You pretended to be feeling so pleasured that you were a dead weight, pulling the panting skeleton down on top of you while Sans tugged on his hipbones again. Papyrus put up quite the fight, attempting to keep his balance for fear of falling on top of the dogpile and hurting you both, but really who could stop you and Sans when you worked together like this?
You eventually toppled the great giant, but he did his best to break his own fall by landing on his elbows. You only had the wind knocked out of you for a moment before you began moving your hips yourself, back and forth, taking Papyrus' dick as deep as you could. It was slightly curved, warmer than any human and so fucking long that your back developed gooseflesh when he found your g-spot. Your tongue snaked past your lips and lathed at his neck, eliciting a very reserved sound. Using your teeth, you nibbled lightly at the bone, then sucked as hard as you could, hollowing out your cheeks. He choked in surprise and you felt the dick inside you leak a spurt of fluid – you made a mental note to try that out on Sans later and chew him like a dog bone.
Jesus, Paps' face was so close to Sans'…a fact made apparent to him very abruptly as Sans craned his neck over your shoulder to join your ministrations on the other side of Papyrus' neck. The Great Papyrus made a startled noise and attempted to move away, but you had him in your death grip as you wrapped your legs around his waist too, never stopping your pistoning hips. He had stopped thrusting into you and was putting all of his energy into trying to move back onto his knees to give himself more control, but you kept him weak by increasing your pace on his member and panting his name hard into his ear as you ravished him.
"Oh fuck, feels so good…" Sans groaned underneath the pile. The weight and intensity of the situation was making him delerious. Deft fingers stroked every inch of you and then Papyrus that he could reach. His knowledge of skeleton anatomy trumped yours - he proved it by taking two fingers and stroking lightly at the base of Papyrus' tailbone.
The reaction was instantaneous.
The bigger skeleton threw his head back, parting his jaw and moaning languidly into the night as Sans teased his most sensitive spot relentlessly. You felt a rush of wetness escape your pussy as a bright orange tongue materialised in his jaws; you had had no idea that he could do that too, and you sucked it into your mouth hungrily.
"That's it, bro." Sans urged, using the hardness in his fingers to grate over the tailbone. The sound hurt your ears, but it seemed to turn Papyrus on beyond recognition. "Just give into it…fuck if you could see how you look right now."
Papyrus could do nothing under such an assault.
He hesitantly began stroking the inside of your mouth with his tongue. It was thicker than Sans', and the texture was different; you showed him some of your best moves and realised he was a very fast learner. He fucked your mouth with his tongue like he was born to do it, and you smiled against his teeth as you felt his hips begin to move again. He forced you down into Sans, grinding him into the mattress. Fuck, you were so close!
Sans flicked the tip of the tailbone again with finesse, and Papyrus' whole body shook with forceful tremors. He made desperate little sounds into your mouth as he started up a punishing rhythm, while Sans did the same from behind you. He used his free hand to rub quick little circles against your clit – how he was doing this to both of you at the same time was beyond your comprehension. You dropped your head onto Papyrus' broad chest and screamed as you rode out your orgasm, and oh shit, did you just fucking squirt?! You would have been embarrassed if the sight didn't seem to egg the skeleton men on - to the point where they locked tongues over your shoulder, your fluids dripping over both of their cocks and lubricating them. You stared in disbelief through your clouded vision as flashes of blue and orange lashed desperately against each other; Sans was keening like a girl which would have really done it for you if Papyrus hadn't pushed your post-orgasm body aside. You landed with an unceremonial thump on the mattress, annoyed to be left out of the action at first.
But you quickly got with the program when Papyrus pressed your Sans into the bed and shoved his glowing dick into the smaller skeletons pelvic cavity. The area seemed to have some kind of magical blue force field (where his asshole would be if he had skin), and Sans gasped again and again, clawing at Papyrus' back. You noticed the light had gone out in one of his eyes while the other had a ghostly blue ring, and it made you shiver. He looked so unlike his usual punny self, and more like the monster he was.
Papyrus pushed his dick in further, meeting resistance, and his skull began sweating with the effort. He wasn't going to give up that easily though, and he started up a grinding rhythmic assault on Sans' force field. He groaned gutturally when the field finally parted to allow him entrance. It must have felt pretty damn amazing for both of them, because they both froze in place, laying completely still, and could only let out the occasional choking sound. It was almost like the pleasure from it was physically wrapping around their throats and wringing them dry. Sans was arching his spine so far off of the bed that he looked ready to break, and the bright blue light flashed in his left eye socket. He came first, impaling himself wantonly on his brother's dick and painting both their spines with his seed. Papyrus wasn't far behind either, and he grabbed Sans' wrists to pin them above his head, holding his shaking body in place as he rutted himself to completion. You felt a pull at your navel when you saw how his cum exploded with such force that it covered every bone inside Sans' cavity. Sans writhed beneath him, mewling at the sensation of warm, orange fluid dripping and sliding on his bones, and he reached down to fist sloppily at the orange appendage. Papyrus let out several more spurts and fucking growled a warning at Sans, becoming over-sensitive, but Sans laughed between his pants and did the same to Papyrus' tailbone. His brother inhaled sharply and the lights dimmed in his eye sockets too as he reached out with both hands, grasping at his brother's throat and beginning to choke him.
"…Ye-eeeees~" Sans' voice bubbled out through the pressure, his eyes lidding as Papyrus began thrusting again. My god, the stamina of these men never failed to amaze you.
"You never know when to stop." Papyrus murmured, leaning in close and licking a thick line across his teeth. They looked…pointier that usual. He manhandled the smaller skeleton so that he was now taking him from behind, never releasing the death grip on the pale throat.
"You just love to tease the Great Papyrus, do you not?"
Sans was bucking wildly now, and he somehow managed to summon the strength to grin through the forceful hold on his throat, winking up at his bother.
"God…" Papyrus was cumming again, never breaking eye contact with Sans. "You know just how to wind me up, you little-"
He was cut off by the sound of Sans' voice bubbling up through his asphyxiation, and as you watched Sans' come a second time too, you thought it was high time you joined them.