Rule 34 Dev - 2010s 2016 after_fellatio after_oral animated_skeleton blue_blush blue_tongue blush bottom_sans clothed cum cum_on_face fellatio_pov heart_eyes male male/male male_focus male_only male_pov pov sans sans_(undertale) semen_on_face skeleton solo_focus suckmytrombone tongue tongue_out uke_sans undead undertale undertale_(series) yaoi|1014800