Xbooru - 1boy 2d 2d (artwork) animated skeleton artist request blue blush blue penis blush bodily fluids digital media (artwork) ectopenis genital fluids genitals hands over head looking at own penis lying down lying on back male male only monster nervous penis precum precum drip precum on penis sans sans (undertale) shirt up skeleton solo male submissive submissive male sweat undead undertale undertale (series) unknown artist video game character video games