Underswap Sans x Papyrus EXTREME NSFW! (I do not own any pictures including the cover photo) Sans gets curious as to why Papyrus comes home drunk all the time, so he talks Papyrus into letting him try his whiskey. After waaaayy too many drinks, Papyrus manages to pry Sans away from Muffet's and back home to where Sans lets himself go. Having drank so much alcohol and for his first time makes him confused, vulnerable, and curious. Papyrus doesn't have as many shots, but he's still affected and has his own alcohol-induced fun time. After that one night stand with his brother, Papyrus realizes he's craving Sans' body and eventually can't control himself anymore. Again, this is NSFW, please be responsible and respectful.

LustBerry. That's it. Lust Sans and his universe Underlust terrify the others in the multiverse, even the Bad Sans'. But one night at a party Lust meets a sweet little berry, Blue Sans. They get along and, even though they just met, Blue offers Lust a place to hang out whenever he needs, Underswap. /So fair warning, only Sans' and Papyrus' know about AU's. Frisk and Charas know as well but they're rarely in this if at all, sorry bout that. I hope you enjoy it!/

The reason you shouldn't tell Blueberry to go fuck himself Is because he takes everything literally