Xbooru - 2020s 2023 2boys animated skeleton blush blushing male boots bottom sans bottomless bottomless male brother brother/brother brother and brother brother penetrating brother brothers clothed clothing cum cum inside dominant dominant male drooling duo ectopenis ectoplasm ejaculation english text fontcest from behind position gloves grey background incest male male/male male only maledom malesub mellouwana monster orange penis pants around legs papyrus papyrus (undertale) papysans partially clothed partially clothed male penetration penis red gloves sans sans (undertale) seme papyrus sex shirt lift shirt up simple background skeleton submissive submissive male text top papyrus uke sans undead undertale undertale (series) yaoi