Xbooru - 2010s 2017 2boys 2d 2d (artwork) animated skeleton annoying dog (undertale) bottom sans brother brother/brother brother and brother brothers canid canine canis clothed clothed male clothing comic comic panel comic sans digital media (artwork) dog domestic dog english text feral fontcest hoodie incest jacket lowest-of-dirt lowest of dirt male male/male male only monster pants bulge papyrus papyrus (font) papyrus (undertale) papysans pinned down sans sans (undertale) seme papyrus skeleton speech bubble talking to another text text bubble top papyrus tumblr uke sans undead undertale undertale (series) video game character video games white background yaoi