gelbooruhttps://xbooru.com/index.php?page=atom&tags=2010s 2018 2boys 2males animated skeleton blue blush blush boner boner in pants boots bottom sans brother/brother brothers clothed clothed male clothing duo english text erection erection under clothes fontcest gay gloves glowing glowing genitalia grabbing another's chin grabbing chin grabbing sheets gripping sheets hoodie incest jacket legs apart male male/male male only moaning monochrome monster orange blush papyrus papyrus (undertale) papysans partially colored sans sans (undertale) seme papyrus sitting skeleton socks soul soul sex spookster sweat text top papyrus trembling trembling legs uke sans undead undertale undertale (series) white background yaoi2024-05-17T23:27:44Zgelbooru