WARNING:
If you are part of the people that did NOT want a lemon, skip this.

NOTE:
This is my first lemon ever. My only other experience with them is reading them (obviously). Please have mercy!
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"Wait, what?!" You squeaked. "Punishment?! Who are you, my dad?!"

"No, but to be honest I wouldn't mind if you called me daddy." He purred into your ear.

You shuddered and broke his grasp, stepping back once. "Um, Sans... What exactly do you plan on doing to me?" You asked shakily.

"Now if I told you, where would the fun be in it?"

You gulped, bumping into something. You kept your eyes on G!Sans in the dark room, but reached a hand back and prodded the object. Directly behind you, a solid piece of wood stopped just above your tailbone. On the other side of the wood you felt a cushy, probably expensive, mattress covered in neat sheets.

Already off balance from leaning over the head of what you were sure was a bed, G!Sans pushed just enough to make you fall backwards on to the mattress without harming you in any way.

"S-Sans..." You said quietly.

He crawled over you, caging you against the bed. He gazed at you hungrily and lowered his head towards your neck. You squirmed, pushing him slightly.

"Um, Sans... This is weird. I-I don't even know where we are and I just got done with a show and Frisk will be worried and-"

"That doesn't matter right now." G!Sans cut you off.

His hallow eyes scanned up and down your body. Growling quietly, he used a hand and tugged at your dress playfully. "You look so beautiful in this dress." He whispered. "But I bet the dress would look better on the floor."

You squeaked quietly and hid your blushing face. He chuckled and moved your hands away from your face, holding your wrist above you. His head was nestled into the crook of your neck. He spoke huskily and in a low tone, hot breaths sending goosebumps throughout your body.

"I didn't want to bother the neighbors, so I rented this room for the night." He said quietly.

You were about to ask another question, but his teeth clamped gently to your neck, a small moan escaping your open lips. He smirked against your flesh.

"It's one of the special rooms in MTT, made especially for situations like this. Sound-proof, double lock doors... I'm all set."

You caged a moan in your throat and instead sent him a confused look. "But what are you-"

He bit down on your neck again and another moan escaped, louder than before. "No noise during punishment dove. That only makes me go slower." He cooed.

A long yellow luminescent tongue rolled out of his mouth, caressing your neck. It pushed over your sweet spot, making you bite your lip to contain your impatient moan. You relaxed slightly and took a deep breath. G!Sans looked at you curiously.

"Did you loose your fight dove?" He teased.

You smirked, "Nope." You said breathily.

He stopped a moment, confused, not expecting your actions.

You pulled one wrist from his grip quickly and grabbed the collar of his turtleneck, pulling him into a kiss. As he processed your actions, you rolled the both of you, G!Sans now sitting below you. You kicked off your shoes and looked down at him. He looked at you in awe, then chuckled.

You laid on top of him, elbows propped up along his ribs. Your fingers twisted the fur of his hood playfully as you spoke.

"You know how I grew up Sans. I'm done being the submissive little girl." You growled.

He raised a brow and entertained a look of amusement. "Oh?"

You smirked. "You really are terrible with punishments aren't you? Aren't you supposed to be the dominant one?"

He shrugged. "I'm up for trying new things."

~LEMON START~
Your eyes trailed down along G!Sans and you sat up, legs straddling his pelvis. Slowly you pulled the zipper of your dress down, watching as his eyes followed your movements.

Once the zipper was completely down, you shrugged off the shoulder, still clothed but showing more skin. He groaned as you stopped, sending you a look of impatient annoyance.

You laughed evilly and trailed your hands along his ribs. Your fingers brushed every rib in length, watching as he tried to bite down any noises.

Giggling, you pulled him up by his jacket and peeled away his jacket. Carefully placing it to the side, knowing it was his favorite article of clothing, you returned to him. He pulled off his turtleneck. Your curiosity took over as you examined his torso. Your hands glided around his ribs, slipping past to a glowing, golden heart. You picked it up gingerly, G!Sans' sockets growing large. Yellow blush painted his skull. Noticing his reaction, you stroked the soil softly, a moan escaping from the skeleton.

"Did I just find your weakness?" You asked in a mocking tone.

"Come on (Y/N), it's hardly fair if you're getting to the fun part and I haven't even seen below the dress." He complained.

You raised a brow and smirked. "Would you like to help me then?" You asked.

You pushed off of him and stood at the side of the bed. With your back turned to him, you inched the sleeves off. He growled and latched his arms around you. You squealed, quickly dissolving into uncontrollable laughter.

"Who's the impatient one now?" You teased.

"Shut up." He groaned, rolling his eyes.

He peeled the dress off and threw it on the floor, looking at you in your (F/C) undergarments. Your hands fled to cover yourself up, suddenly over conscious of your body.

G!Sans looked at you and took your wrist in his hands. "Don't try to hide yourself dove, I want to see every part of your beautiful body." He cooed.

You looked unsure, but let him move your wrists away. This was the first time you'd been this exposed to someone you actually cared about. Before this, you'd thought your days at the bar had ruined you.

G!Sans smiled, trailing a hand over your curves. His hands trailed behind you, unclasping your bra and letting it fall to the ground. Your face reddened as you averted your eyes. "Don't stare." You muttered.

"How could I not? You're so beautiful."

His finger slipped below your chin and directed your eyes to his. "I love you (Y/N). And everything about you. Don't ever let yourself think otherwise."

You smiled, putting your head against his ribcage. "Thanks Sans."

His thumbs slipped under the waistband of your panties and you squealed. Slapping his hands away, you sent a glare his way.

"Wait your turn!" You nagged. "I'm not going bare nude when you're still wearing your jeans."

He chuckled released you. You turned towards him and looked down. You ripped off his shoes and moved your hands to his belt. Quickly undoing it, you pulled down his jeans. You withheld a squeak as his member sprung slightly behind the fabric of his boxers. Recognizing your hesitance, G!Sans chuckled.

"You surprised? You did say Sans from your AU taught you about skeleton anatomy."

"Well yeah but he didn't show me! That'd be weird!" You defended.

He chuckled. "Here, I'll help you."

He grabbed his boxers and pulled them down, his full length springing in all its glory. You gulped, eye widening. He chuckled and grabbed your hands, pulling you to your feet, and then lifted you against his pelvis.

His member rubbed against your panties, your cheeks flushing as you became more and more wet. You grinding your hips against him, not wanting it to stop.

He smirked as you released quiet moans. Your eyes widened as he swept you up and pinned you against the mattress. His boney fingers slid against your folds as his other hand fondled your breast.

"Okay Little Miss Dominant, maybe I should take the reigns for your first time."

"How do you know it was my first time?"

He gave dull look accompanied by a sly smirk. "I know you. Past considered or no, I would know either way."

He lowered his head to your chest and swirled his tongue around one of your breast. With his other hand he played with your clit, smiling when you bent to the will of your pleasure.

"Sans, please..." You whined, squirming slightly.

He rolled his eyes and moved his face close to yours. "Okay dove, but you asked for it."

"What do yo-"

He rammed his member into you while at the same time pressing his mouth to yours to cut off your hiss of pain. He broke off and looked at you with a careful concern.

"Are you okay?" He asked, brushing a strand of hair from your cheek.

You nodded, though you still felt the stinging pain lingering. You'd read enough lemons on Wattpad to know movement would probably fix it.

G!Sans began to move slowly, thrusting deep as you adjusted. The pain gave way to increasing pleasure as you began to moan.

"Faster..." You whined, bucking your hips against him.

He obeyed happily, thrusting faster and faster. His member hit deeper and deeper, eventually hitting your g spot consistently. You moaned loudly, arms hanging on to each other around G!Sans' neck.

"Damn you're tight." Sans groaned, looking at you lustfully.

"Virgin bonus." You teased.

He chuckled, hitting that spot once again. Your moan grew louder and louder, G!Sans' own moans mixing with yours in a strange harmony. A knot of loving tension coiled in your gut as you bucked against his thrust.

Tightening more and more, G!Sans' member began to throb within you.
"Sans, I'm gonna cum." You panted.

"I am too (Y/N)."

Your walls began to tighten around him, your panting moans reaching their climax. G!Sans held you came closer. He hit the knot and you released your juices with a loving cry.
"SANS!!!" You moaned.

He thrusted again, mixing his own mixture with yours. "(Y/N)!!!" He cried.

G!Sans collapsed next to you, pulling you into a tender embrace. The two of you panted heavily, now laying together with satisfied and loving smiles.

G!Sans reached the covers and covered the two of you, pulling your into his barren chest. Your eyes fluttered shut, exhaustion and soreness starting to take you.

"I love you Sans." You said dreamily, sleeping pulling at your eyes.

"I love you too (Y/N)."
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Well, that just happen. I just wrote seventeen pages of bedroom playtime. I'm gonna go use holy water as eyedrops now. I've sinned. Lord help me.