gelbooruhttps://xbooru.com/index.php?page=atom&tags=1boy 1male 2010s 2018 animated skeleton blue blush blue penis blush blushing bottom sans bottomless bound wrists duplicate ectopenis jacket lower resolution duplicate male male only malesub monster nsfwgarbagedump panting penis sans sans (undertale) simple background skeleton solo solo male submissive submissive male tied up tied wrists uke sans undead undertale undertale (series) white background2024-05-10T21:37:20Zgelbooru