Xbooru - 1boy 2d 2d (artwork) ahegao alternate version available animated skeleton arms behind back artist request black background blue blush blue cum blue eye blue jacket blue penis blush bondage bottom sans bound bound arms clothed cum cum on self cumshot digital media (artwork) ectopenis handsfree ejaculation jacket low res lowres male male ahegao male only malesub monster penis penis out sans sans (undertale) skeleton solo solo male submissive submissive male tied up uke sans undead undertale undertale (series) video games