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1. Special Lemon Sale by Bubbleteasing

   Fandoms: Undertale (Video Game)  

   • Explicit
   • Creator Chose Not To Use Archive Warnings
   • F/M, Multi, Other
   • Work in Progress

   06 Jun 2026

   Tags

   • Creator Chose Not To Use Archive Warnings
   • Sans (Undertale)/Reader
   • Sans & Sans (Undertale)
   • Sans (Undertale)
   • Reader
   • Underfell Sans (Undertale)
   • Reader/Underfell Sans (Undertale)
   • Threesome - F/M/M
   • Sex Pollen
   • Vaginal Sex
   • Oral Sex
   • Rough Sex
   • Mild Hurt/Comfort
   • Fluff and Smut
   • Reader is a Lawyer
   • Accidental Drug Use
   • Reverse Harem
   • Porn With Plot
   • Face-Fucking
   • Face-Sitting
   • Dry Humping
   • Rough Oral Sex
   • Rough Kissing
   • Shameless Smut
   • Smut
   • Bad Puns
   • terrible puns
   • You will feel like you're reading a sitcom
   • or rather...
   • A sitcum
   • (I used this pun in a comment and I wanted to put it somewhere else)

   Summary

   Living with two annoying skeletons has its ups and downs.
   We're showing the ups here.

   Oh, and also how they go down on eachother.

   Series

   • Part 2 of Three idiots

   Language:

   English

   Words:

   16,717

   Chapters:

   3/4

   Comments:

   37

   Kudos:

   190

   Bookmarks:

   12

   Hits:

   4,178