Xbooru - 2020s 2023 2boys 2d 2d (artwork) animated skeleton big dom big dom small sub bigger dom bigger dom smaller sub bigger male blue blush blush bottom sans brother brother/brother brother and brother brothers clothed clothing comic comic panel cum cum on head cum splatter digital media (artwork) dominant dominant male drooling duo ectopenis extreme size difference fontcest frotting gloves heart heart-shaped pupils heart eyes hoodie implied bottomless implied penis incest jacket larger male macro macrophilia male male/male male only maledom malesub micro microphilia monster orange cum orange penis papyrus papyrus (undertale) papysans partially colored penis purplebluepen45 sans sans (undertale) seme papyrus size difference skeleton slippers small sub small sub big dom smaller male smaller sub smaller sub bigger dom solo focus soul submissive submissive male thrusting top papyrus uke sans undead undertale undertale (series) unseen male face video game character video games yaoi youfoundta