Xbooru - 2020s 2023 2boys 2d 2d (artwork) animated skeleton artist name beetleevil blue blush blue tongue blush blushing male bottom sans brother brother/brother brother and brother brother penetrating brother brothers clothed clothing commision commision art completely nude completely nude male crying dazed digital media (artwork) dominant dominant male duo ectopenis ectoplasm ectotongue edit edited english text evilbeetle fontcest from front position genitals grabbing leg heart-shaped pupils heart eyes incest large filesize long image male male/male male only maledom malesub monster nude nude male orange blush orange penis overstimulation papyrus papyrus (undertale) papysans partially colored penetration penis sans sans (undertale) seme papyrus sequence sequential sequential art sex simple background skeleton sketch speech bubble submissive submissive male tall image tears text text bubble third-party edit thrusting tongue top papyrus trembling trembling legs uke sans undead undertale undertale (series) video game character video games yaoi