Y'all lucky that I hold back on the puns in this chapter. But there will definitely be boners.
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You continue your way home after longs days of work trying to help Alphy in the lab. She's a sweet girl but very shy. You hoped she confesses to Undyne soon.
"I'm home!" He walked in through the door.
"Hey." You turned to Sans at the top of the stairs.
"Where's everyone?"
"Well, Frisk went with Papyrus to see Udyne because Papyrus still trying to prove he can be the best guard."
"At least he's ambitious." You sweatdrop.
"Yep." You both flopped on the couch sitting in silence for a few moments.
"Bored." You both say in unison.
"Do you want to go to Grillby's?" Sans suggested.
"Hm... Sure!"
You both got up and made your way to Grillby's. You both sat at the usual spot as Grillby came out.
"Hello, how are you both?"
"We're good. But you're looking pretty hot today Grill." Everyone started laughing.
"I'll give you the usual Y/n." He went back to the kitchen.
"So hows your day going?" Sans asked as he drank the ketchup.
'I'm still confused about how that doesn't go through him.' You thought.
"Good Alphy gave me a new book to read." You exclaimed.
"What's it about?" You blushed realizing he doesn't know about your... Unique reading choice.
"Well... It's just some boy- I mean friends that go out one night and have fun going on adventures."
'Yeah, I'm definitely not telling him what it's really about.'
"I know you read yaoi Y/n." Sans opened one... Eye socket? Looking at you.
You turned redder as you began to stutter, "I-I didn't know... You know about that."
"Your too easy." Sans laughed.
Your food came back as you dug in. After you guys finished and paid for everything you went back to the house. Once you got there you saw a note on the coffee table. You picked it up and read it.
"What's it say?"
"It says that Papyrus and Frisk went Alphy's house for a sleep over... THEY DIDN'T EVEN INVITE ME?!" You crush the paper in your hand.
"How about we have our own sleepover. Just the two of us?" Sans smirked.
"Heh... Sounds fun. I'll go make the snacks!" You started toward the kitchen.
"I'll go get the blankets and pillows."
... Time Skip...
It's was almost the end of the movie when Sans fell asleep on your lap. At first, you didn't realize it at all until you felt him snuggle closer to you. You giggled as kissed him. (A/n: Look I really wasn't expecting smut okay, I'm trying.)
You felt. A hand wrap around your head making the kissed deeper and more passionate. You both separate breathing for air.
"Mm... Morning already?" Sans joked.
"You should probably tone down the jokes before I have a bone to pick with you." You leaned closer.
"I think I have a better bone to pick with you." He winked as your fave turned red. Unexpectedly he flips both of you around as he was now on top. "Now where should I begin?"
Sans kissed your lips as he went down your body finally reaching your pants.
"Do you want to stop?" You looked at him with a small smile.
"No... I trust you." He smiled back as he pulled your pants and shirt off.
He wrapped his... mouth? Around your member sucking hard but teasingly.
"Sans~!" You said pleadingly. "Stop teasing me."
"Hehe... Okay okay." Suddenly he pushed in two fingers into you.
"Ah!"
"Shh... It's okay breathe." He continued a scissor-like motion eventually the pain mixed in with the pleasure as you became a moaning mess. He added two more fingers for save measure before pulling them out.
"Sans?" Without answering he pulled out his member shoving into you without warning. "Ahh~!"
"Hgn!" Sans thrust was fast and hard almost sending them both over the edge.
"Sans I'm gonna cum!"
"Hgn... Me too Y/n." A couple more thrust before you came on his stomach as Sans came inside of you. You both stopped to catch your breath.
"Well..."
"Well, we should probably clean up before we fall asleep."
"Hehe, Okay but..."
"But what?" He asked concerned.
"You have to carry me upstairs because I won't be able to walk."
