#imagineskels (afsj)

[verdanabdit]

How each goes about taking their first d☆ck. Unless otherwise noted, they're on top and in control of the pace, and have either never been penetrated before or at least have never been penetrated by something bigger than two of their fingers. And of course are with their bro.

I'm boring and think of vajimbos but feel free to imagine a butt instead.

~~~

UT Sans: Agonizingly slow. Needs to rest after nearly every centimeter. Tries really hard not to breathe weird or make noise, unwilling to admit he's not just messing around teasing. By the time he's fully seated, he's out of breath from holding it for so long. Won't admit how overwhelming it is, but can't help but cling to Pap's ribs.

UT Papyrus: Worked himself up thinking it was going to hurt terribly, and the discomfort doesn't live up to the hype, so he takes it smooth and easy. Doesn't stop; finds the continued motion helps dull the slight pain.

UF Sans: It's a heat-of-the-moment thing, so neither of them are really thinking about it when Papyrus pushes him down, and he's surprised by just how much it hurts and ends up kicking Papyrus in the face. Thought lube was for quitters, so they don't have any, and he grumps around while waiting for Papyrus to get back from the store. Papyrus yells about the huge mess Sans makes using more than half the bottle all at once, but Sans snaps back, "shut the f☆ck up. what you gonna do, f☆ck me to death and use me like sawdust to clean it up?? friggin chad thunderc☆ck's out for blood over here, if he can't rip through your taint, he'll bludgeon you with his damn python." and squeezes out the rest of bottle just to be a shit. It still hurts like a motherf☆cker, of course, and Papyrus lets Sans beat on his chest to help distract from it. Says there's not going to be a next time, but changes his mind about half-way through the night.

UF Papyrus: Learned from the above disaster. Brags about how he, unlike Sans, is not going to waste half their night on something so trivial. Is pretty good about hiding his discomfort, and even tells Sans he was being dramatic that time. The banter is a good distraction from the fact that he's not quite f☆cking Sans stupid like he said he would. He'll make good on that promise next time.

US Sans: Doesn't expect it to hurt, so he goes at it with a little more gusto than he should. Very vocal. He pauses after the head, but he doesn't stop for long, not wanting to back down. Nothing he can't handle!!! Has to be told to slow down.

US Papyrus: Tries to play it cool, letting Sans take the lead, but he's actually really worried about it hurting. Tries to endure, but he curls away with a pained groan and worries Sans, who pulls back out. Papyrus ends up crying just a little from a mixture of pain, embarrassment and feeling like he's ruined the evening. He admits he had been looking forward to this, even though he was nervous. Sans calms him down, offers to stop or keep going. Gently works him open until they're snugly joined. (But I also just like to think of this Papyrus as delicate. (*pq′ー｀) He never fully adjusts to how girthy Sans is, so it always hurts at the start even with extensive prep. He learns to not mind it, and then enjoy it.)

SFR Sans: Sets the evening up as a very slow, sensual, teasing atmosphere. Tells Papyrus he isn't allowed to move. Distracts them both with kisses so neither of them are thinking too hard about how slowly he's working himself down. It actually hurts like a b☆tch, but he's glad to feel it. Glad they can share this.

SFR Papyrus: Takes it all in one go, slamming down, groans and comes immediately. It feels like something tore. He's crying. Sans, worried, asks what he should do, but he takes so long to answer. When he does, he just begs Sans to move. It hurts too much to move on his own, but he doesn't want to stop. He doesn't stop crying. It'd be less awkward if he could articulate that he likes how it hurts, but he's just too overwhelmed at the moment. He's sad that it'll never hurt that same way again.

SFP Sans: Most of the time is spent just looking at it. Snaps "DON'T RUSH ME!" when questioned. It's annoyance that gets him to actually do anything, but he needs to pause after a couple inches. He stalls once it's all in, not wanting to admit he needs time to adjust.

SFP Papyrus: Lets Sans do what he wants. Tries to cover up his wincing with complaints about Sans's lack of a delicate touch, but Sans goads an embarrassed admission out of him that it's his first time doing this.

FSG Sans: Sans had asked Papyrus to lead and planned to endure any pain for his brother's sake, just wanting him to feel good, but Papyrus refused, too worried that he'd hurt Sans even with instruction. Sans still largely sets aside his own discomfort, taking it a bit faster than is comfortable for the sake of assuring his brother he's fine.

FSG Papyrus: It's an all night process. He flinches away once it starts to hurt and needs a break. Sans keeps asking if he's sure he wants to do this, but he's determined. They eventually get him fully seated, but it's still too much to really work with, so they just sit still for the rest of the night. He's too sore to try again for a few days, and the next attempt goes about the same. Fourth time's the charm, and he apologizes for the trouble, but Sans assures him he's enjoyed simply being joined with him plenty enough.

HT Sans: Lets Papyrus do what he wants. A sharp inhale makes Papyrus stop, ask if he's alright, but Sans shortly just tells him to keep moving, that it's going to hurt no matter what anyway. Just do it. Papyrus tries to go slow anyway.

HT Papyrus: Is so enamored with the idea (and used to most things hurting) that he doesn't really notice it or let it slow him down.

UL Sans: He was begging Papyrus to take him anyway. He's not going to make him stop now. He cringes and groans loudly, and Papyrus tries to pull out, but Sans locks his legs around him and says it's fine; it's supposed to hurt. A little teary when he asks Papyrus to please keep moving.

UL Papyrus: Kind of regrets just going for it, but stopping part-way would hurt worse. 'Fights back' against the pain by bouncing harder. He'll have given himself a limp by tomorrow.

G Sans: Lays back and is super flippant about it. Pokes fun at Pap for putting so much effort into preparing him. Stops laughing when Pap nudges inside, whimpering a bit. When asked if he's okay, he tries really hard to play it off, says he was just trying to get a rise out of Pap since he cared so much. Papyrus sees through his bullsh☆t, kisses him sweetly, and kindly says he'll be more gentle. Sans grumbles to himself that Pap is way too suave, but he's putty in his hands already, wrapping his arms around his brother's neck and melting into how much tender care he's receiving.

G Papyrus: The only one of them to have used a reasonably sized toy first. Slowly acquainted himself with the sensation on his own so he wouldn't end up being the reason a nice evening needed to stop or pause. Sans is pretty salty about it since Pap made Sans's first into such a damn event.

~~~

US Sans (alternate): It doesn't hurt at all. Papy tragically has a pencil d☆ck. Since he takes it all at once, Papy expresses concern for him, and Sans has to make the snap decision on whether to be honest that he can hardly feel it or pretend in order to save Pap's ego. (If the truth ever comes out, Pap will be devastated, ask why Sans let it go on that long, and Sans responds "BUT YOU WERE SO CUTE, THRUSTING AWAY LIKE THAT. LIKE YOU WERE GETTING SOMEWHERE. IT WAS REALLY CUTE, PAPY." and like, it's not like he wasn't laughing at him, but it wasn't in a mean way, but it's difficult to get that across. For Sans, there's something endlessly endearing about Papyrus trying so hard but being unable to pleasure him. He's not sure what this k☆nk is.)

UF Sans (alternate): Wants it to hurt. He spends his life trying so hard to avoid getting hurt, and he knows Papyrus would never harm him. He wants to feel his brother safely break him. A wonderful pain that symbolizes their trust and love. He urges Papyrus onward, freely cringes and groans in pain, pulls Papyrus closer when he tries to pull away, begs him not to leave, to keep going.

#fontcest #fontcest (afsj) #fellcest #fellcest (afsj) #swapcest #swapcest (afsj) #fellswapgoldcest #fellswapgoldcest (afsj) #swapfellcest #swapfellcest (afsj) #horrorcest #horrorcest (afsj) #lustcest #lustcest (afsj) #gcest #gcest (afsj) #swapfellpurplecest #swapfellpurplecest (afsj) #imagineskels #imagineskels (afsj)

[verdanabdit]

(Underfell)

Sans starts wearing a collar by his own choice after the first close call during a fight with one of the dogs. Just a cheap, already well-used second-hand thing with some of the spikes worn down or missing. It does the job, though; no jaws go for his neck again.

Then Papyrus gifts him a new, hand-crafted one for his birthday one year. Tells him the old ratty one is an eyesore that he's sick of looking at.

For a while, it's just a really nice gift that his brother gave him. He wears it the same way he did the old one; only when he's going to be around people who might want to chew on his neck.

Then he starts wearing it more often. Most just assume he's too lazy to keep taking it on and off. Papyrus first worries that he's not feeling safe even in their own home anymore, but his posture is still slack and easy, he still sprawls out on the couch like nothing can get him, and he's more often found picking at the collar—running a finger over the top edge of the leather, thumbing the buckle, tapping the sides of the spikes—with a fond expression on his face.

Then he starts to notice Papyrus. Just how capable he's become, how unbending his morals have remained in the face of everything, how smooth his stride is, how... not cool, but cool he looks in his armor. How safe he feels when they're just standing together. How much he misses the hugs they used to share when they were younger.

As he presses a palm against the buckle to better feel the inner side of the leather, he thinks maybe he's getting a little too much out of this one gift. This one gift that was meant to help keep him safe.

After one of their many harmless back-and-forths gets just a little more heated than normal and ends up with Papyrus lifting him off the ground by that collar, he knows he's getting far more from the gift than ever intended. He concedes way too easily, trying to casually slink off to his room, confusing the heck out of Papyrus who had been waiting to counter another of his smartass comebacks.

One hand pulls at the collar around his neck while the other pulls at his c☆ck, the memory of Papyrus effortlessly holding him up without a worry for the spikes still fresh in his mind. He doesn't question what it means, or what he's learned about himself from the ordeal until weeks later when the guilt has had enough time to settle. It was a position he'd never imagined himself in before, and he tries so hard not to make a habit of jerking off to thoughts of his brother—to try and backtrack this sick fixation he has far enough that he at least doesn't need to concentrate on a poker face when looking Papyrus in the eye.

But Papyrus makes it really fucking hard when he's discovered he can win almost any argument by grabbing Sans by the collar, and he has to put two and two together eventually. He grabs the collar, San becomes putty and runs off with his metaphorical tail between his legs before what's actually between his legs becomes immediately obvious.

A few months later, Papyrus undoes the collar and pulls it free from around his neck. Sans panics, absolutely sure that the cat's out of the bag and he's wrecked the greatest good he's had and ever will have in his life. The gift is being taken back as a sign of disgust and the best he can hope for is an eternal silent treatment.

Then it's replaced with a new one, gently adjusted tighter until he can feel some type of engraving on the inside. Papyrus's fingertips leave an extra little jingling noise behind as he pulls away. Sans reaches a hand up to feel, and there's an extra ring near the buckle that the old collar lacked. He looks up with wide, cautiously hopeful eyes.

Maybe they should have just sat down and talked about it like adults first. Maybe it wasn't best that Papyrus just hooked a phalange through that shiny new D-ring and led him upstairs. Maybe the first time he said 'i love you' in a way that brothers shouldn't, shouldn't have been while he was speared on Papyrus's c☆ck and struggling to breathe through how tightly the collar was being pulled against his neck. But he doesn't regret hearing it said back to him after his brother retracts his tongue from his throat, the words breaking the string of saliva connecting them.

They'll hash the details out later.

~~~

By which I meant I ran out of steam hahaha

#fellcest #fellcest (afsj) #imagineskels #imagineskels (afsj) #sub sans #sub lazy #dom papyrus #dom energetic

[verdanabdit]

Pre-confession, Sans accidentally catches Pap mast☆rbating while calling Sans's name, and Sans is super intimidated by just how rough Papyrus is being with himself. Like holy f☆ck are you trying to set it on fire?? Rip it off?? Like sure he's turned on by it but he might just die if that's how hard Papyrus would go.

Extra points if he's using something like a t☆nga egg and he breaks it. (Okay nvm after writing this down, I looked into it and those are apparently really easy to break even with a micro p☆nis. So alright, fine, up the ante, he's using a too small fl☆shlight and breaks it with his stupid monster schl☆ng.)

(Also, there's ART!! by purplebluepen45!! It was posted to tumblr so much earlier than this post because there's a big delay between when I post stuff on twitter and when it gets posted here.)

#fontcest #fontcest (afsj) #imagineskels #imagineskels (afsj)

[verdanabdit]

(Underswap)

Papyrus accidentally sees the Swapfell bros going at it, with SF!Sans sweetly, gently, destroying his brother's ☆ss. Pap's been the top in his and Sans's relationship so far, thought that was just how it was supposed to be, but that absolutely blissed out look on SF!Pap's face as he begs for more has him curious, longing, envious.

The next time he and Sans are intimate, he can't stay aro☆sed because he's realized just how not-into topping he is. Sans fusses over him, asking him what's wrong, and it takes some prying, but Papyrus admits he really just wants his older brother to take care of him. Sans is super supportive, praises him for being honest, and lays him down. But all Papyrus has ever summoned before has been a d☆ck, so that's all he's got to work with right now on short notice. Sans still praises him, climbing on top and riding him nice and slow. Promises that they'll work on this, that the next time they make love, he'll take Papyrus's v☆rginity all over again. "* WOULD YOU LIKE THAT? BEING WRAPPED SO SNUGLY AROUND ME. I'LL BE SO GENTLE, PAPY, I'LL LOVE YOU RIGHT--" and Pap is gone, already coming, crying at that fantasy, that promise.

#swapcest #swapcest (afsj) #imagineskels #swapfellcest #swapfellcest (afsj) #imagineskels (afsj) #dom sans #sub papyrus #dom energetic #sub lazy

[verdanabdit]

More giant c☆ck Papyrus

Maybe they work at it for a long time. Get a bunch of toys in increasing size, or a speculum, trying to slowly stretch Sans enough to at least take the girth. With how sore it leaves him, it takes a couple months before they can even try.

#fontcest #fontcest (afsj) #imagineskels #imagineskels (afsj) #i'm sorry but papyrus just deserves to be spectacularly hung

[verdanabdit]

Did You Know? Depending on your lib☆do and other hormone levels, regular org☆sms can be necessary to help regulate your emotions.

A common way to portray UF Paps is angry all the time. 👁️👁️

… It's pretty obvious when he's finally gotten to nut. It takes a long time for him to realize that that's why he gets in a better mood sometimes.

Or conversely, the first time they're separated for a while and he doesn't have any time to himself, he doesn't realize that that's probably why he's so easy to anger lately. It kinda pisses him off.

(And it's either a disappointing time or a great time for Sans when they're finally back home together. Either not going to last long; making up for lost time; or channeling all of it into angry s☆x.)

~~~

I'm kinda mad at me that I didn't have much to expand this into. I'm sure someone else could.

#fellcest #fellcest (afsj) #imagineskels #imagineskels (afsj)

[verdanabdit]

Sans intentionally doing small things throughout the day to irritate Papyrus. Keeps riling him up as much as he can, all for the express purpose of being on the receiving end of angry s☆x. They may have a scene here or there of angry brutal f☆cking, but there's just something really great about it when Papyrus is genuinely super annoyed with him. Not upset, but irritated. He has all the energy and vindictiveness that comes with anger, but not in danger of tipping over into actually doing real harm.

And he just keeps going during. Keeps running his mouth or trying to knock over anything within arm's reach. Or noodle-arm flailing/slapping/grabbing at Pap's face. It's just not complete until Papyrus is shrieking at him and slamming his skull into the mattress like it's a street brawl.

#fellcest #fellcest (afsj) #imagineskels #imagineskels (afsj) #dom papyrus #sub sans #dom energetic #sub lazy

[verdanabdit]

Papyrus is why Sans is tired and napping all the time. I'm sorry, that's boring. What's less boring is Papyrus calling it stamina training.

Alternatively, since we sometimes just keep referring to their j☆zz as magic too, Sans's body absorbs it and uses it as extra energy. He's not tired and doesn't need to nap on days after they've had s☆x. It takes them a little while to notice that that's the reason why Sans isn't quite so lazy anymore, but once they do, Papyrus makes it a part of their schedule. He wants to experiment to see if more volume = even more energy, or if the additional activity would cancel it out. It's the scientific approach, Sans, we need lots of data sets.

#fontcest #fontcest (afsj) #imagineskels #imagineskels (afsj) #dom papyrus #sub sans #dom energetic #sub lazy

[verdanabdit]

A bit of fellcest that I woke up thinking about. That one little piece from Trousledpelves's comic came back to me and I think we should utilize it more often.

Was mostly a vehicle to get to the last bit of dialogue. I don't know why I like that kind of thing.

~~~

Sans in heat and persistently begging for Papyrus to fuck him, but Papyrus keeps brushing him off because he's busy with other things. Eventually Sans is tired of being told no (they've been together for a while at this point), and knows Pap's been aroused as hell too, so he manages to knock him down and wrestle his pants down enough to ride him.

He goes wild and hard to scratch that itch inside. "* ahgnn! god! fuck!! you always hit the perfect spots in me, even like this... shit, y'know i even tried a buncha toys? how, how the hell is this so much better? you seen some'a the shit they make? hff, hha.... lucky ass divine dick-havin' bastard. better’n focus-tested, vibrating silicone. nnghh!! nnnah, guess i'm the lucky one then, yeah? get your cock all to m'self..."

Even though the praise makes him throb, Papyrus is still annoyed. "UGH, FOR-- ARE YOU IN LOVE WITH ME OR MY PENIS?"

"* hehh?" Sans pauses his bouncing, entwines their fingers on one hand, kisses him deeply. He pulls away to look down at their laps, eyelights slowly making their way back down from rolled into the back of his skull. He raises up a few inches to watch where they're joined--literally; the ghostly flesh is partially melded together, strands of it painlessly connecting and stretching. As he stays still, those strands waver a little almost like tendrils reaching out. "* looks like these two are in love, too." with his free hand, he runs a phalange along one of the strands, both of them feeling the gentle stroke, then lightly pinches at the juncture on Papyrus's side.

Surprised by just how odd and good that feels, Papyrus involuntarily bucks upward, drawing an embarrassingly loud moan from Sans, who tries to resume his earlier rough ride. But between the praise, the heated kiss, shared sensation and knowledge that they're literally connected, Papyrus is more than sufficiently wound up to finally be all in on giving Sans what he's been asking for all week. The rest of the babble he fucks out of his brother strokes his ego and stokes his love enough to keep him fueled for the whole night.

#fellcest #fellcest (afsj) #imagineskels #imagineskels (afsj)

[verdanabdit]

(Even more somn☆ph☆lia, I'm sorry)

Papyrus goes into heat in the middle of the night, wakes up after coming from dry h☆mping Sans.

Sans has given consent prior to this for Pap to use his body however he needs, since his first heat after getting together ended with Sans passing out half-way through and Papyrus suffering alone.

Despite this, Pap holds out as long as he can, mast☆rbating for about an hour before he can't take it anymore and just goes ham on Sans. Doesn't even prep him, just smears his c☆m on him for lube and crams his d☆ck in.

#fontcest #fontcest (afsj) #imagineskels #imagineskels (afsj) #dom papyrus #sub sans #dom energetic #sub lazy

[verdanabdit]

It only hits somewhere in the middle of their first time that it's real. This is happening. The past few months haven't been a dream or a joke leading up to a cruel punchline.

It's overwhelming.

#fontcest #fontcest (afsj) #vaguecest #vaguecest (afsj) #imagineskels #imagineskels (afsj)

[verdanabdit]

A flavor of Fellcest that I like is when Papyrus says some really f☆cked up possessive yandere sh☆t that should have anyone running for the hills but Sans is totally super into it.

Sometimes it's just one of the ways he regularly conveys his love and it's a normal reminder between them, and Sans responds casually like "* d☆mn, you trying to get me in the mood?"

Sometimes it's a confession that he's nervous about sharing, like "THE WHOLE INC☆STUOUS LOVE THING WAS JUST THE TIP OF THE ICEBERG; YOU WOULDN'T LOVE ME IF YOU KNEW ALL THE TERRIBLE URGES I HAVE." and Sans is like "try me" and by the time Pap is done he's either

"* omg you don't say, tell me more...?" trying to subtly strip

Cannot get his clothes off fast enough, already grinding on his lap, "* yeah! anything! yours for the taking! own me! chain me to you! scr☆w me in a pile of my best's friend's dust!"

Skull flushed entirely red, overwhelmed that he could be so thoroughly desired, didn't think he could be more smitten with his brother than he was 10 minutes ago. Trying to keep his cool, stuttering out "* ye-yuh, uh, joke's on you? i'm innnto that sh-hit? heheh..." (It's not often we get to actually explore this flavor when it's fresh, so it'd be great if they actually talked about it rather than just jumping into it like I just wrote above. Haha)

#fellcest #fellcest (afsj) #imagineskels #imagineskels (afsj) #dom papyrus #sub sans #dom energetic #sub lazy

[verdanabdit]

Did you know that Papyrus's bed frame has the sides extend upward like car doors the whole way around the sides of the mattress? I forgot about that detail because Literally Nobody draws it that way or writes about it that way. And I'm not going to write about it that way because it's conflicting with my sm☆t

But you know what? You could use that for a nice little picture anyway. Whatever they're doing on the bed being cheekily hidden by the 'car doors'.

But actually it makes the bedtime stories either much funnier (Sans can't even see Papyrus while he reads to him and that's just how they do bedtime stories I guess) or much more intimate (he has to be in the bed with him).

#fontcest #fontcest (afsj) #imagineskels #imagineskels (afsj) #observations&headcanons

[verdanabdit]

(Prompt born of a rant thread about leather upkeep)

~~~

I am learning so much about the upkeep of real leather and now I'm concerned about how much time the fell AUs have to spend cleaning and conditioning their wardrobes

I'm now also very intimidated by any leather that is not plain black. Black is just black so like, color fading or the shade of polish doesn't matter at all as long as the polish is pigmented enough. But anything else can get real wonky real easily.

..... Red slathering his hands in leather conditioner and rubbing Boss's ass. Says he's helping. Gets knocked away because he's using too much and is going to ruin the pants.

#fellcest #fellcest (afsj) #imagineskels (afsj)

[verdanabdit]

Branching off from size queen night

What if Pap just legitimately does not fit. He is too big. The power of love and magic is not enough. Sure there's plenty of stuff they can still do, even swap positions, but it's still disappointing that there's something so basic that they physically can't do.

#fontcest #fontcest (afsj) #imagineskels #imagineskels (afsj) #dom papyrus #sub sans #dom energetic #sub lazy

[verdanabdit]

I'm not normally into the moral panic side of things unless there's a happy end to it, but I've imagined… (I'm not sure which brother I prefer to have it, so I won't specify one)

There's a little resistence concerning it at the beginning, but they give in. It's just a little bug in the back of one's mind for a long time. Every touch, hug, kiss, makes their soul flutter in a good and bad way.

The first time they make love, their soul soars, but suddenly sinks when they're on the brink of org☆sm. The reality of their situation comes crashing down at that moment, ruining it, making them scramble to get away.

I don't know how best to go about a bad or good ending from there, but it's just awful for reality to hit then of all times.

(The last delayed-reaction one was meant to be happy the whole way through. This one isn't!)

#fontcest #fontcest (afsj) #vaguecest #vaguecest (afsj) #imagineskels #imagineskels (afsj)