gelbooruhttps://xbooru.com/index.php?page=atom&tags=animated skeleton back view blue blush blue eyes blue tongue blush bottom sans bottomless bound arms bound wrists drooling ectotongue gag kneel male only monster mouth gag multiple views naked nude open mouth partially colored sans sans (undertale) skeleton solo tied up tied wrists tongue tongue out uke sans undead undertale undertale (series) unknown artist white background2024-05-14T03:12:50Zgelbooru