gelbooruhttps://xbooru.com/index.php?page=atom&tags=1boy alternate version available anal animated skeleton blue background blue blush blue eye blush bone bottom sans clothed ectopenis ectoplasm jacket legs apart legs spread line art lineart lying on back male male only monster naxlevelnat object insertion on back pants around ankles pants down sans sans (undertale) simple background skeleton solo solo male uke sans undead undertale undertale (series)2024-05-14T17:59:52Zgelbooru