gelbooruhttps://xbooru.com/index.php?page=atom&tags=1boy alternate version available anal animated skeleton blue background blue blush blue eye blue jacket blue penis blush bone bottom sans clothed duplicate ectopenis ectoplasm jacket legs apart legs spread looking at viewer lying on back male male only monster naxlevelnat object insertion on back pants around ankles pants down sans sans (undertale) simple background skeleton solo male uke sans undead undertale undertale (series)2024-05-14T14:38:35Zgelbooru