Rule 34 Dev - 2010s 2018 2boys 2d 2d_(artwork) animated_skeleton blindfold blindfolded blue_tongue bondage bottom_sans bound bound_arms bound_wrists brother brother/brother brother_and_brother brothers clothed clothed/nude clothing collar comic comic_panel digital_media_(artwork) dominant dominant_male domination duo ectopenis ectotongue english_text fontcest imminent_fellatio imminent_oral incest lowest-of-dirt lowest_of_dirt male male/male male_only maledom monster naked nude orange_penis papyrus papyrus_(undertale) papysans partially_colored penis sans sans_(undertale) seme_papyrus silhouette skeleton submissive text tied_arms tied_up tongue top_papyrus tumblr uke_sans undead undertale undertale_(series) unzipping_pants video_game_character video_games white_background yandere yaoi|1031432