Xbooru - 1boy 1girl 2020s 2023 2d 2d (artwork) animated skeleton artist name blue breasts blue nipples blue tongue bottom sans breasts clothed clothed male clothing cum cum on face digital media (artwork) ech7474 ectopenis female sans gaster gaster (undertale) genderswap genderswap (mtf) genitals gloves hooded jacket hoodie jacket licking licking face licking penis male male/female monster multiple views nipples nude off shoulder orange penis paizuri penis purple background rule 63 sans sans (undertale) sanster seme gaster sex simple background skeleton solid color background sweater tears top gaster uke sans undead undertale undertale (series) video games watermark white gloves