Xbooru - ... 2020s 2022 2boys animated skeleton artist name biting biting shoulder bottom sans bottomwear brother brother/brother brother and brother brothers cape clothed clothing dialog dialogue duo ectotongue empath life english text fontcest gloves grey background hands around neck hands on another's shoulders hands on shoulders hooded jacket hoodie incest jacket kissing making out male male/male male only monochrome monster pants papyrus papyrus (undertale) papysans partially clothed partially clothed male partially nude saliva saliva on tongue saliva trail sans sans (undertale) scarf seme papyrus sequence sequential simple background skeleton taking off clothes tel a friend text tongue top papyrus topless topless male uke sans undead undertale undertale (series) undressing undressing another undressing partner watermark yaoi