(NSFW) Undertale One Shots

Short and Sweet Fun (Sans/FEM!Reader)

Sans breathed heavily, shaking in place while his body rested on the couch. He was invited by you to hang out earlier, but he didn't know you meant this type of hanging out. His face was tinted a dark blue, and he let out cute little moans every now and then. Sans's voice trailed off in a long moan, it being loud and quiet in between breaths. He gripped the couch, leaving tears of fluff, as you continued to suck him.

"H-holy sh-shit k-kiddo.." Sans managed to gasp out. His blue dick glowed in Your mouth, as you continued to suck. You popped up from sucking and giggled, your soft voice emanating in a hum sound. Sans's Raspy voice gasped out as You stopped sucking and he started to whimper. "D-don't s-stop~!" Sans whined. You smiled deviously and dragged your tongue up the base of Sans's shaft, slowly. You made your way to his tip, and Sans Gasped out louder then before. His eye lit up blue and flashed yellow a couple of times. His cock became harder, and You noticed this easily. You sucked as hard as you could on Sans's Tip, and Sans let out a large groan, his back arching in pleasure. You started sucking slower and slower, Sans gasping as you did so. Sans let out a Final gasp, it being choppy, loud and fast. "f-fuCK!" Sans shouted, spilling blue fluorescent goop into Your mouth. You pulled up to breath, and cum continued to spurt from Sans on to Your face and his own attire. The goop seemed endless, and Sans moaned loudly as every spurt of seed escaped his cock. You giggled as he came for 30 seconds non-stop. You were amazed at this and Breathed heavily. You wanted it inside your pussy. You leaned on top of the still cumming sans and positioned your opening on His tip. You felt the cum shooting up inside of your walls, and panted heavily as you slid down his Large cock. He gasped at the sudden tightness and looked up to see your walls wrapped around his cock. He squealed loudly and grabbed your waist, holding you down on his thick dick. You moaned loudly, feeling his tip brush against the end of your cavern. It was too much. He continued to cum repeatedly inside you, as you started to fill up with the sticky substance. Sans's bones rattled as you slowly slid back up, and slammed back on to him, the cum splatting on the couch from the impact.