gelbooruhttps://xbooru.com/index.php?page=atom&tags=2010s 2016 2boys animated skeleton bottom sans brother brother/brother brother and brother brothers clothed comic comic panel comic sans duo ectopenis english text fellatio fontcest hand on another's head incest male male/male male only monochrome monster oral orange penis papyrus papyrus (font) papyrus (undertale) papysans partially colored penis penis out sans sans (undertale) seme papyrus sequence sequential skeleton sucking penis text tombone-jack tomis-jb top papyrus uke sans undead undertale undertale (series) yaoi2024-05-19T08:27:23Zgelbooru