Reader oneshot LEMONS?!?!?

So very hot (sans/reader)

(requested by a guy on ao3)

(warnings: overstimulation, choking,tentacles, minor pain play, and major sub and dom)

You stretched out and yawned "maan today was exhausting" You say, and who can blame you! Working an extra hour at grillby's ,you love the place don't get yourself wrong! But an extra hour of not spending time with your beloved boyfriend and that and a customer throwing up, it's just been a very stressful day for you. "(Y/n), we're closing up" you heard a familiar fire being whisper to you "I know grillbs it's just been very stressful for me as of late y'know" He just nodded while you got up and started to close up, after getting sans' jacket and waving goodbye to grillby you decide to call your second favorite skeleton, papyrus. "HELLO THIS IS THE GREAT PAPYRUS SPEAKING?" You giggle at his still loud voice "It's nothing paps just wondering if your back from patrol yet?" you hear him gasp and swallow somehow "N-NO HUMAN I AM NOT, BUT I HAVE TO WARN YOU, DON'T GO BACK HOME,SANS HAS BEEN ACTING... RATHER STRANGE LATELY." You immediately worry "Oh no what's happened?" you asked, panic in your voice "I'M NOT SURE HUMAN, NO WAIT UNDYNE DON'T BURN DOWN THE HOUSE! AND YOU SHOULD CHECK, UNDYNE GLITTER DOES NOT GO IN THE SPAGHETTI!!! SORRY HUMAN I'LL CALL YOU BACK LATER!" Papyrus said before hanging up the phone.

You open up the door to your, well the skele bros home, but you have no place to stay soooo... you decide to knock on sans' door "Hey sans, I called paps and I was wondering if you're alright?" You say to him, you heard a very noticeable 'FUCK' come from the other side, as well as him probably hitting the floor. "hey doll, i'm not feeling good right now, so maybe you could leave for a while, i promise that i'm not trying to get rid of you or anything! I just need some-, *whisper* oh fuck not right now. time! okay babe?" You heard him call from the other side, your still worried about him but give a confirming hum and turning to leave, probably going to waterfalls and enjoy the scenery, however when you start to leave you feel some familiar boney arms around your waste, and a flash of blue lock the door "no don't leave, don't want you to leave, need you" He whispered into your ear, you felt something rut against you and so you turned around to find your boyfriend face 99% blush and his eye burning yellow and blue, you felt something hard rut into you again and you look down to find the ever so familiar blue cock, dripping with pre thrusting into your pants "Aww sans, baby, if you were pent up you could have just told me~" You cooed stroking the blue cock with your hand. "baby doll, please. you have to understand that this isn't normal" He whispers thrusting up to meet your hand "Well I'm fucking a sentient skeleton with a blue magic dick, I think normal is tossed out the window" you argue, placing your hand on the tip of his ecto-cock and rubbing in circles "please (y/n) i'm in heat! i don't want to hurt you" this is where your interest peaked, you've heard he had this every season, however you had yet to experience this. "Oh baby, you know I love it when you get rough~ plus you won't hurt me to badly, we know this. And... well this is fucking hot not going to lie~" You say comforting him by taking your unused hand and stroking his head. He seemed to flinch at this, trying to calm himself from not taking you then right there. "you sure about this baby doll, cause once i start, i won't stop until this thing passes, and that can take a few days." He asked you making sure you were giving him 100% consent, you nodded and said "Hey i wouldn't have offered if I didn't like this."

This seemed to have snapped something in him, because before you knew it you were in his bedroom, with sans violently tearing of your shirt and pants "Sans! That wasn't necessary!" You shout, those where some of your best pants too, "ha you should have thought about that before all of this~" He said trying to take of your bra, enficese on trying. When you brought your hand up to try helping him, he just ripped off the bra, you notice his jacket is still on though, so you tried shaking it off, however sans just pins you down, stopping you from your actions "Keep it on, I want to see you in my beloved glory, now be a girl and beg~" he demanded, you decide to comply to his commands "Saaannnns~ please fuck me" you moan out, feeling his cock through your panties, he just laughed and moved, well ripped, your panties aside "nope not good enough, i know you can get better" he teased, while just flicking the tip of his cock up and down your folds "Please sans please fuck me til I can't even walk anymore, I want to feel you break me I- SANS!" You shouted as you felt him enter you in a sudden trust "well if you want me to break you sweetheart, i think i can do that just fine" After that you felt him thrust into you like a madman, you didn't even try to conceal your moans or anything, you just let the pour out for him to hear "fuck sweet heart you feel so good~" he growled at you, thrusting hard with every word, making you clench a little bit tighter around him, you could already feel yourself close to the edge, but try to refrain to make him feel good too. he seemed to have noticed this and growled low and possessively "fuck i can feel yourself get tighter around me, are you close babe?~ go ahead then go ahead and cum, i'll make you feel so good your legs won't be functioning tomorrow~"  he moaned out and starting dragging down a hand over to rub your clit in circles, however his dirty talk has already made you go of the edge, this has also sent sans over the edge too, cumming deep inside your pussy.