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#yandere slaveswapfell papyrus
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What slaves would be ok with their master getting irritated and horny at a meeting but the meeting keeps dragging on because the other person seems to be a dense idiot at the subtle and then not so subtle hints that they should leave before finally just grabbing the skeleton and throwing/pinning them to the desk as they begin to feel them up and undress them all the while giving the other person one last warning to leave before doing the do with the skeleton?
((Hope you like this~))
* Roxxy/Slavefell Sans  'The lovable pervert' - Roxxy would be more than happy to be done by you while the other person was around too. Honestly, he is into being watched, and being claimed in front of people is just something he wouldn’t mind one little bit. Actually, you should claim him in front of everyone else, so everyone would know that he belongs to you.
* Pup/Slaveswapfell Papyrus 'The perfect puppy' - Pup would do absolutely anything that you tell him to. Something as little as this would be one of the easiest things that he could do. He expected maybe for you to ask him to do something more intimate, like fuck in front of the other slaves or something, but oh well, this was going to work too.
* Azalea/Slavefellswap Sans 'The housekeeper' - Well, of course, you would want to do something like this with him! He was perfect and absolutely desirable. There was no way that you wouldn’t feel any sort of sexual attraction to him. But to the point of wanting to do him in front of this stranger? Fuck, that’s... that’s very arousing, that’s for sure!
* Mortis/SlaveDust Sans 'The loose canon' - Mortis couldn’t care less about anyone who is around him. He wouldn’t even wait for you to finish telling the person a warning, as he would unbuckle your pants, and position you at his entrance. Why are you giving someone else attention when you could be already fucking him?
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Pup headcanons?
YANDERE SLAVESWAPFELL PAPYRUS HEADCANONS:
~Do you know what makes Pup absolutely insane for you? How fucking horrible you are with him.
~ Every single time you yell at him, tell him he’s useless and just your toy, he loves it.
~ You make him feel, you make him actually feel something with how horrible you treat him.
~This is a dream for him, and he wants to live with you and only you for the rest of eternity.
~All you need to do is abuse him and break him further. 
~You don’t even need anyone else, because he’ll make sure that you always feel the most pleasure too.
~The real problem would arise when you would get other slaves and would start abusing them.
~Not only those slaves were now taking your attention from him but even daring to insult you...?
~He would kill them, the moment they would hear an insult about you come out of their mouth.
~You are the most perfect master, the best master there is, how dare they!?
~You would be angry with him and hurt him even more, but he didn’t care.
~You were hurting him, giving him so much pleasure, so it meant that you wanted him to keep hurting the others.
~Each time you got a new slave, he would brutally murder them, only to get punished.
~You keep telling him that you don’t want this, but if you didn’t, then why wouldn’t you give him away?
~Things would get worse when you would get a lover... 
~” Master... Oh, master, they couldn’t please you the way I do. I think this is a very stupid idea...”
~No matter the punishment, he wouldn’t care... 
~In a way, he understood why you were doing this, even if you didn’t love the person either...
~This was a form of torture too, right?
~And for the first time in forever...
~He didn’t like this type of torture... It hurt too much
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How would the slaves react to someone visiting the house for a week and their master giving that person a lot of attention, just as they are about to try and kill said person or confront them or their master they find out that they are their masters sibling?
* Ardor/Slavetale Sans 'The catalyst' - Depending on how close you two are, Ardor might not care if you two are siblings or not. If they are still taking all of your attention, he will kill your sibling and get over with him. Besides, it’s your own fault for not telling him beforehand. You were supposed to do that, but you never did. Now, drown in the guilt and learn who you are supposed to be with. 
* Roxxy/Slavefell Sans  'The lovable pervert' - Roxxy would be very hurt, but the thing is, he probably wouldn’t be about to kill your sibling, but instead, would have made someone else do that, meaning that that person wouldn’t care if they are your sibling or not. They would still kill your sibling. Oh well, you still had him! No need to be sad.
* Viper/Slaveswap Papyrus 'The skeptical slave' - Honestly, it’s stupid. He won’t kill your sibling, but still. Why didn’t you tell him? You know you almost lost your sibling? He would insult you before telling you to stop being so close, or else, he’ll kill your sibling.
* Wisteria/Slaveswapfell Sans 'The perfectionist' - Wisteria would immediately change his personality into respectful. Of course, he still hated your sibling, but now he needed to follow rules. He will be able to kill your sibling the moment they leave the mansion, but for now, he will play along with the rules, like he always does.
* Pup/Slaveswapfell Papyrus 'The perfect puppy' - Pup would feel like it’s unfair. He doesn’t want someone else to be getting your attention. He knows that he doesn’t deserve your attention, but he still wants it and he’s angry that someone else is getting it. He won’t kill your brother, but he will, for sure, hate your sibling with all he has got.
* Azalea/Slavefellswap Sans 'The housekeeper' - On the surface, Azalea would look silly, saying that he was stupid for being jealous, but in reality, that makes it even worse. It means that you two are really close and he hates that. He would end up killing your sibling, in the most brutal way possible. He can’t forgive anyone who tries to steal you away.
* Foxglove/Slavefellswap Papyrus 'The perfect lover' - Foxglove would be angry, but he would forgive you this one time. He would spare your sibling, but he would make sure the other slaves hate your sibling so your sibling has a horrific time while visiting you, so they would stop visiting you.
* Mortis/SlaveDust Sans 'The loose canon' - Has Mortis ever cared about such things? He brutally murdered his own brother, you think your sibling is someone that he cares about? If he felt like they are in his way, he will kill them and get over with that, without even worrying about it. If you try to stop him, then you will end up dead too.
* Cassiopeia/SlaveOuter Sans 'The perfect prey' - Same as Roxxy, Cassiopeia probably got someone else to kill your sibling before he knew they were your sibling. When he would find out that they were your sibling, he would be mortified, but he wouldn’t tell you about it, just trying to act like he is on your side, even if his guilt would be eating at him.
* Jaws/Slavehorror Sans 'The starving slave' - Jaws would be very confused. Should he kill your sibling or not? Well, he had his brother dead, so maybe killing your sibling was going to get you two closer? With that logic, he would kill your sibling, and be the one comforting you after that.
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(Master in dom heat pulling out before cuming anon)What about Pup, Mal and Foxglove(if you don’t mind that is)
((Hope you enjoy this~))
YANDERE SLAVESWAPFELL PAPYRUS WITH A MASTER THAT PULLED OUT:
~Pup would be... Well, Pup would be angry, that’s for sure. Pup was so fucking excited about this and now you were just going to do something like this to him? But well, you were also in heat, how could you control himself that much? No matter, he just needed to flip the positions and ride you, so you could cum inside of him. It seemed that you might felt like he wasn’t ready for something like this. It was fine, you just needed to understand that he didn’t mind it, but even accepted it. 
*
YANDERE MAFIAFELLSWAP SANS WITH A LOVER THAT PULLED OUT:
~ Mal would be... well, he would be glad. Honestly, he wasn’t sure he would be able to handle the responsibility that would come with having a child, especially with how his work goes... He would smile at you, and kiss you, telling you that you were being a good lover right now and that you should continue. Just because you came it didn’t mean it was over. You both are monsters, and you both have insane levels of stamina. It’s time to show who can last the longest...
*
YANDERE SLAVEFELLSWAP PAPYRUS WITH A MASTER THAT PULLED OUT:
~Foxglove would be angry. Why would you do something like that? He was everything that you could ever desire, pulling out was simply the worst decision ever. How would you two reproduce now? Whatever, you will do this again, and this time he’ll lock you up so even if you wanted, you couldn’t pull out. He was much stronger than he looked, and he’ll show you that. 
*
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How would you estimate the heights of each yandere skeleton monster?
* Sans/Undertale Sans ‘ The Judge ‘ - 5'
* Papyrus/Undertale Papyrus ‘ The Liar ‘  - 7'4
* Gaster/Undertale Gaster ‘ The Forgotten Scientist ‘ - 7'5 feet
* Red/Underfell Sans ‘ The Sentry’  -  4'11
* Boss/Underfell Papyrus ‘The Guard Captain’  -  8'4
* Aster/Underfell Gaster ‘ The Failed Scientist ‘ - 6'7 feet
* Lucky/Underswap Sans ‘ The Manipulator’  -  5'4
* Stretch/Underswap Papyrus ‘ The Puppet ‘   -  6'2
* Dings/Underswap Gaster ‘ The RiverMan ‘ - 6'4 feet
* Razz/Swapfell Sans ‘ The Lord ‘ -  5'3
* Mutt/Swapfell Papyrus ‘ The Wild Dog’  - 6'3 feet
* Blackberry/Fellswap Sans ‘ The WannaBe Guard ‘ - 4'10 feet
* Patch/Fellswap Papyrus ‘ The Loyal Pet ‘ - 6'4
*Merlot/Fellswap Gold Sans ' The bad wine expert wannabe ' - 5'9 feet
*Mochaccino/Fellswap Gold Papyrus ' The coffee addict ' - 6'4 feet
* Hickory/Horrortale Sans ‘ The Butcher ‘ - 9'0 feet
* Tatters/Horrortale Papyrus ‘ The Cannibal ‘ - 9'8
* Cantaloupe/Storyshift Papyrus - 6'1 feet
* Skyblue/Storyshift Sans ‘ The King ‘ - 5'3 feet
* Midnight/Outertale Sans ‘ The Star Fanatic ‘ - 5'9 feet
* Marrow/Outertale Papyrus ‘ The Earth Fanatic ‘ - 6'8 feet
* Sugarberry/Trickstertale Swap!Sans ' The eccentric Trickster ' - 5'4 feet
* Glitch/Error! Sans 'The destroyer' - 5'8 feet
* Palette/Ink! Sans 'The creator' - 3'8 feet
* Night/Nightmare! Sans 'The bringer of nightmares' - 4'9 feet
* Starry/Dream! Sans 'The bringer of gentle dreams' - 5'8 feet
* Sansy/Fresh! Sans 'The parasite' - 7 inches
* Coral/Shattered Dream - 5'5 feet
* Iris/Fresh! Chara - 6 inches
* Fern/Mafia!Dream  ' The Optimistic Detective ' - 5'8 feet
* Onyx/Mafia!Nightmare  ' The Pessimistic Detective ' - 5'7 feet
* Sangria/Mafia!Ink  ' The soulless detective ' - 4'8 feet
* Chiffon/Mafia!Error  ' The guilty Detective ' - 6'1 feet
* Berry/Strawberry Nightmare ' The positive nightmare ' - 6'7 feet
* Arctic/Snake!Dream!Sans ' The positive snake protector ' - 6'3 feet
* Anchor/Snake!Nightmare!Sans ' the negative snake guardian ' - 6'4 feet
* Sky/Outcode Underswap Sans ' The last star sans ' - 4'2 feet
* Raven/Killertale Sans - 6'1 feet
* Blueprints/Error! Underswap Sans - 3'9 feet
* Echo/Echotale Sans ‘ The PlayBoy’  - 6'8 feet
* Heather/Echofell Sans - 6'5 feet
* Green/Echotale Papyrus ‘ The BookWorm’  - 7'1
* Solaris/Dusttale Sans ‘ The Murderer ‘ - 5'1
* Hound/Dustswapfell Papyrus 'The feeling addict' - 6'6 feet
* Yammy/DustJar Papyrus - 6'3 feet
* Bronze/Disbelief Papyrus - 6'6 feet
* Sandstone/Dustbelief Papyrus -  5'9 feet
* Squash/Dustswap Papyrus -  6'2 feet
* Rust/horrorfell Gaster 'The man who speaks in screams ' - 8'5
* Carnal/Horrorswapfell Gaster ' The Pathetic RiverMan ' -  6'9 feet
* Teddy/Horrorfell Sans 'The dusting butcher' - 6'0
* Cranberry/Horrorswap Sans 'The backstabbing maniac' - 4'3 feet
* Bell/Horrorfellswap Sans 'The incompetent little helper' - 3'9 feet
* Knight/Horrorswapfell Sans 'The Try hard protector' - 5'4 feet
* Garnet/Horrorfellswap gold sans - 6'2 feet
* Rottenberry/Horrorfell Papyrus ‘ The Mute ‘ - 8'2 feet
* Pine/Horrorswap Papyrus ' The creepy Con Artist ' - 8'1 feet
* Cedar/Horrorfellswap gold Papyrus - 6'3 feet
* Spice/Underlust Sans ‘ The Lover ‘ - 5'4 feet
* Cotton/Lustswapfell Sans 'The Authoritative slut' - 4'2 feet
* Candy/Lustfell Sans - 4'8 feet
* Teal/Swaplust sans ' The innocent slut ' - 5'3 feet
* Sugar/Underlust Papyrus ‘ The Friend-With-Benefits ‘ - 6'1
* Lavender/Lustfellswap Papyrus 'The Affection seeker' - 5'8 feet
* Marmalade/swaplust Papyrus - 6'4 feet
* Eros/Altertale Sans 'The gentle giant' - 8'1 feet
* Nebula/Alterswap Sans 'The benevolent ruler' -  7'9 feet
*  Azure/Dancetale Sans 'The dancer' - 5'4 feet
* Puffy/Danceswap Sans ‘ The Happy-Go-Lucky Dancer ‘ - 4'4 feet
* Lyric/Danceswap Papyrus 'The jokester dance fanatic' - 6'2 feet
* Tangerine/Dancetale Papyrus  -
* Comet/Outerswap Sans 'The Curious human fanatic' - 3'3
* Pluto/Outerfellswap Sans 'The strength fanatic' - 3'1
* Perseus/Outerswapfell Sans ' The rule follower ' - 4'3 feet
* Cygnus/Outerfell Sans ' The eccentric dreamer ' - 3'9 feet
* Bloodbath/Shiftfell Papyrus ‘ The Catacombs Caretaker ‘ - 7'3 feet
* Riffle/Mafiatale Sans ‘ The Mobster ‘ - 6'6 feet
* Riggs/Mafiafell Sans 'The failing underling' - 7'5
* Slate/Mafiaswap Sans ‘ The Two-Faced ‘ - 5'4 feet
* Mal/Mafiafellswap Sans ‘ The Malevolent Boss ‘ - 5'3 feet
* Casanova/Mafiaswapfell Sans ' The Angry Boss ' - 5'8 feet
* Grim/Mafiahorror Sans ' The Devoted follower ' - 7′1 feet
* Rose/Mafiatale Papyrus ‘The Right Hand ‘ - 6'3 feet
* Whip/Mafiafell Papyrus ‘ The Boss ‘ - 7'1 feet
* Slim/Mafiaswap Papyrus 'The blind follower' - 6'7 feet
* Rus/Mafiaswapfell Papyrus ‘The Jack-Of-All-Trades ‘ - 7'5
* Slim/Mafiaswap Papyrus 'The blind follower' - 7'2 feet
* Toots/Mafiafellswap Papyrus ' The kind follower ' - 6'9 feet
* Dreary/Mafiahorror Papyrus ' The cowardly follower ' - 5'8 feet
* Syrup/Mafiafellswap Gaster ‘The Spy ‘ - 7'1 feet
* Chompers/Mafiahorror Gaster ‘The deceased Don’ - 7'3 feet
* Admiral/Mafiafell Gaster ' The brutal Don ' - 6'8 feet
* Basiliscus/Mafiatale Gaster ' The Collected Don' - 7'2 feet
* Apricot/Mafiaswap Gaster  ' The cheerful informant ' - 6'9 feet
* Sable/Mafiaswapfell Gaster ' The strict Don ' - 7'1 feet
* Ardor/Slavetale Sans 'The catalyst' - 4'2
* Roxxy/Slavefell Sans  'The lovable pervert' - 4'4
* Ditzy/Slaveswap Sans  'The savant slave' - 3'9
* Wisteria/Slaveswapfell Sans 'The perfectionist' - 4'7 feet
* Azalea/Slavefellswap Sans 'The housekeeper' - 4'1 feet
* Mortis/SlaveDust Sans 'The loose canon' - 4'6 feet
* Cassiopeia/SlaveOuter Sans 'The perfect prey' - 3'7 feet
* Jaws/Slavehorror Sans 'The starving slave' - 6'9 feet
* Viper/Slaveswap Papyrus 'The skeptical slave' - 6'2 feet
* Rogue/Slavefell Papyrus  'The reluctant slave' - 6'4 feet
* Pup/Slaveswapfell Papyrus 'The perfect puppy' - 7'1 feet
* Foxglove/Slavefellswap Papyrus 'The perfect lover' - 5'8 feet
* Spruce/Beasttale Sans ' The territorial Alpha ' - 7'5 feet
* Shamrock/Beasttale Papyrus ' The Friendly Beta ' - 7'9 feet
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What are the slaves like in heat? When they are crushing on their owner and not please~
((Before going into this, I would like to say that my favorite type of writing is when the reader is the dominant/top one, so that’s what I usually do. The main gender that I usually use for sexual asks is herm/intersex (Someone with both genitals, in this case), with female pronouns, if needed. I just wanted to warn everyone so they would know what they are getting into before I start!))
((Also, there are quite a few characters and these are pretty long, I’ll only be doing 4 of the slaves, so if anyone wants to know about some of the others, please feel free to send in a request!~))
YANDERE SLAVETALE SANS IN HEAT WHEN IN LOVE WITH HIS MASTER:
~First of all, he would have a submissive heat. As we know, submissive heats are very dangerous, just like dominant heats. We also know what the purpose of such heats are, and that is to breed or be bred. With his case, because he would have a submissive heat, he would have the desire to be bred. As we also know, skeletons and some other monsters, have the ability to change their bodies and genitals as long as they have magic. 
~Normally, his favorite genitals to use are male ones, but because of his heat being of submissive origins, he would use female genitals.
~Of course, as we know, don’t let the heat name confuse you. The only reason they are called submissive heats is because they want to be bred and not to breed someone. It doesn’t mean they are going to be submissive little pillow princesses, waiting to be bred. If they want someone, they are going to go and fucking take them, especially if they are naturally aggressive in their everyday life.
~Lucky for you, or well, unlucky for you, Ardor is one of the more aggressive slaves that you own. While in a submissive heat, he wouldn’t fuck around.
~You see, Ardor always hated the fact that you were around others, but if you two would have a kid, well, you would need to take responsibility, right? You were too good to not do that.
~The next thing you would know, he would already have you tied up, the door locked up and he would be ready to start.
~He would probably tell you that it’s honestly your fault for making him feel like this, and that if only you cared less, he could care less about you too.
~He wouldn’t care about any problems that you might have, or anything like that, alright? He will not stop until he feels a small soul developping.
~Lucky for you, submissive heats only last a week, so eventually, the heat will wear off, but it’s more likely that he’ll only stop when he thinks he might be pregnant.
*
YANDERE SLAVEFELL SANS IN HEAT WHEN HE’S IN LOVE WITH HIS MASTER:
~Honestly, Roxxy wouldn’t change much, or at least, not at the beginning.
~He would try to control himself as much as possible, at the beginning, so he would be able to trick you into being in a room alone with him.
~You see, he has a submissive heat, meaning that his sexual needs would rise in an insane rate. The fact that he wants to be bred is also something that could become a problem ,but he couldn’t care less at the moment.
~When he would lock you inside a room with him alone, he would probably start going on an insane sounding rant, about how much he loved you and that the only way to show that their love is real, is if they would produce a fruit of love, in this case, a child.
~Honestly, at this point, your consent would be the last of his priorities. He wants to get pregnant already, and show everyone that he’s superior faster, so they would leave you alone for good, and would keep you for himself. 
~Roxxy is actually madly strong, but he never showed it before, because he just never cared about fighting back. But this time? If you dare try to pull out or push him off... You’ll have your hands broken.
~Honestly, your screams would arouse him even more, so be careful, because at any sign of you fighting back again, he’ll break some other of your bone.
~Unlike the others, he wouldn’t stop even after he feels like he might be pregnant. He would probably keep it up until either you or him would pass out.
~Don’t put up your hopes too high though, the moment either of you wakes up again, you’ll go at it again.
~Honestly, he doesn’t even need you to be awake to feel as much pleasure as he wants.
*
YANDERE SLAVEFELL PAPYRUS IN HEAT WHEN HE’S IN LOVE WITH HIS MASTER:
~Rogue would try his best to control himself. He didn’t want to let his heat over and do some mistakes that would ruin his life here...
~But because of the heat, he would imagine a lot of things. For example, how happy they could be if they would have a little baby. Or three.
~But then he would bring himself back to reality, trying to remember  that the difference in status would get in the way...
~Rogue would be able to control himself, as long as you wouldn’t enter his room.
~If you would, you would probably find him a blushing and sweaty mess on the bed, trying to relieve the heat and emptiness that he felt.
~Because he would push himself to such a point, it would be an instant reaction to push you to the wall, after locking the door, and undying your pants
~Throughout it all, he would keep repeating that this was going to be good for them both, and that you would be a great parent.
~After he would feel that he might be pregnant, he would probably leave you wherever you currently were, as he would return to his bed, cradling his stomach with a satisfied look on his face.
~This would be your only chance of escaping right now.
~Of course, unless you want to go through that session that?
*
YANDERE SLAVESWAPFELL SANS IN HEAT WHEN HE’S IN LOVE WITH HIS MASTER:
~Wisteria would, with all his might, try and stop himself from even thinking such things. He would repeat that you were his master and that he shouldn’t be thinking about such things.
~But, there were no rules against this... A part of him would try to reason with his more logical side, with the fact that no rules against heat week are put in place, but it didn’t mean he could do whatever he wanted. He had to consider his morals...
~Well, it is hard to keep your morals in consideration when your mind keeps replying moments when you were in any sort of sexual position...
~Thankfully, his more logical side always won, and this time was the same. He wouldn’t want to do anything to you, let alone make you a parent this early on... He wanted to get closer to you before he could even consider that!
~Of course, he still needed to deal with his heat, that’s why he decided to find a compromise to this problem. So, what better solution than to get some underwear and clothes that smell like you?
~He would probably go to your room when you are not around, and take whatever catches his eyes, before going back to his room and locking the door, in case you would try to come to his room...
~He wanted to control himself but if you did come here, he might just not be able to do that, and there was no way around it...
~He hopes that you don’t want your clothes back, because you’re not getting them back~
*
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Do any of the yanderes suffer from separation anxiety?
YANDERES WITH SEPERATION ANXIETY:
* Dustswapfell Papyrus
* Slaveswapfell Sans
* Horrorfellswap Sans
* Dustswap Papyrus
* Lustfell Sans
* Mafiatale Papyrus
*Flowey/Undertale Flowey ' The soulless monster ' -
* Tuscan/Underfell Asriel ' The obsessive prince ' -
* Spruce/Beasttale Sans ' The territorial Alpha ' -
* Umber/Horrorshift Asriel ' the broken down sentry ' -
* Pine/Horrorswap Papyrus ' The creepy Con Artist ' -
* Charcoal/Snaketale Sans ' The chubby snake ' -
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