Xbooru - 1:1 1:1 aspect ratio 2016 2d 2d (artwork) animated skeleton anon anonymous male artist name blue blush blue tongue blush bottom sans clothed cockotron digital media (artwork) faceless male fellatio fellatio pov fvdsfs genitals licking licking penis long tongue male male pov monster oral penis penis in mouth pink sweater pov sans sans (undertale) sex simple background skeleton solo focus sweat sweater third-party source tongue uke sans undead undertale undertale (series) unseen male face upper body video games white background