gelbooruhttps://xbooru.com/index.php?page=atom&tags=2010s 2016 2boys animated skeleton blush lines bottom sans bottomless brother brother/brother brother and brother brother penetrating brother brothers cozmic13 duo ectopenis fontcest gloves incest japanese text legs spread line art lineart male male only missionary position monster papyrus papyrus (undertale) papysans partially clothed penetration penis sans sans (undertale) seme papyrus sex skeleton socks socks on spread legs sweat text top papyrus uke sans undead undertale undertale (series) unseen male face2024-05-11T08:09:31Zgelbooru