gelbooruhttps://xbooru.com/index.php?page=atom&tags=2010s 2016 2boys 2d 2d (artwork) animated skeleton blue blush blush bone creampiesummer digital media (artwork) duo duplicate english text fire elemental gay grillby grillby (undertale) grillsans lower resolution duplicate male male/male male only monster orange body sans sans (undertale) skeleton sounding text text bubble undead undertale undertale (series) urethral urethral insertion video game character video games white background yaoi2024-05-13T21:00:16Zgelbooru