gelbooruhttps://xbooru.com/index.php?page=atom&tags=2010s 2015 2boys 2d 2d (artwork) animated skeleton big dom big dom small sub bigger dom bigger dom smaller sub bigger male bigger penetrating bigger penetrating smaller blue tongue blush bottom sans clothed duo ectotongue fire elemental gay grillby grillby (undertale) grillsans ladybumtickler larger male larger penetrating larger penetrating smaller male male/male male only monster naked male nude male orange body orange penis penis sans sans (undertale) seme grillby skeleton small sub small sub big dom smaller penetrated smaller sub smaller sub bigger dom sniggysmut third-party source top grillby uke sans undead undertale undertale (series) video game character video games white background yaoi2024-05-19T16:19:01Zgelbooru