gelbooruhttps://xbooru.com/index.php?page=atom&tags=1boy 1male animated skeleton artist request blue blush blue eyes blue penis blush bodily fluids bottomless ectopenis fluids grey background kneel male male only monster penis sans sans (undertale) shirt pulled up shirt up simple background skeleton socks solo solo male sweat undead undertale undertale (series)2024-05-08T23:09:47Zgelbooru