gelbooruhttps://xbooru.com/index.php?page=atom&tags=2010s 2016 2boys animated skeleton blue tongue bottom sans brother brother/brother brother and brother brothers clothed comic comic panel duo ectopenis ectotongue english text fellatio fellatio pov fontcest hand on another's head incest male male/male male only male pov monochrome monster oral orange penis papyrus papyrus (font) papyrus (undertale) papysans partially colored penis penis out pov sans sans (undertale) seme papyrus sequence sequential skeleton sucking penis text tombone-jack tomis-jb tongue top papyrus uke sans undead undertale undertale (series) yaoi2024-06-17T10:37:10Zgelbooru