gelbooruhttps://xbooru.com/index.php?page=atom&tags=2boys 2d 2d (artwork) animated skeleton blue blush blue penis blush bodily fluids bottom sans clothed digital media (artwork) disembodied penis dissextion eye fucking eye penetration fluids grey background male focus male only penis penis in eye sans sans (undertale) simple background skeleton skull fucking solid color background solo focus uke sans undead undertale undertale (series) upper body video game character video games yaoi2024-05-16T08:15:15Zgelbooru