Xbooruhttps://xbooru.com/index.php?page=atom&tags=2010s 2016 2boys 2d 2d (artwork) alternate version available anal animated skeleton artist name artist watermark big dom big dom small sub bigger dom bigger dom smaller sub bigger male bigger penetrating bigger penetrating smaller blue blush blue jacket blush bottom sans brother/brother brother and brother brother penetrating brother brothers clothed clothed sex digital media (artwork) drooling duo ectotongue english text fangs fontcest from behind from behind position gay gloves heart-shaped pupils heart eyes humanoid incest jacket laddinger larger male larger penetrating larger penetrating smaller male male/male male only male penetrated male penetrating male penetrating male monster monster boy onomatopoeia orange blush orange tongue outside papyrus papyrus (undertale) papysans penetration penetration from behind penetration through clothes public sex red gloves sans sans (undertale) seme papyrus sex sex from behind skeleton small sub small sub big dom smaller male smaller penetrated smaller sub smaller sub bigger dom speech bubble stealth sex sweat text text bubble tongue top papyrus tumblr uke sans undead undertale undertale (series) unseen character video game character video games visible breath watermark yaoi2024-09-08T02:45:24ZXbooru