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alternate_universe ambiguous_gender animated_skeleton black_eyes blush bone brown_hair clothed clothing covering covering_eyes covering_face digital_media_(artwork) elemental_creature flora_fauna flower flower_creature flowey_the_flower frisk_(undertale) green_eyes group hair hi_res human jolliapplegirl lying male mammal not_furry on_back plant sad sans_(underfell) sharp_teeth skeleton smile teeth undead underfell undertale undertale_(series) 5:4 absurd_res alternate_universe animated_skeleton bone clothed clothing coffee_mug container cup dialogue duo english_text fan_character hi_res holding_container holding_cup holding_object humanoid loverofpiggies not_furry sans_(underfell) science_sans skeleton text undead underfell undertale undertale_(series) 5:4 absurd_res alternate_universe animated_skeleton bone clothed clothing coffee_mug container cup dialogue duo english_text fan_character hi_res holding_container holding_cup holding_object loverofpiggies not_furry sans_(underfell) science_sans skeleton text undead underfell undertale undertale_(series) 5:4 absurd_res alternate_universe animated_skeleton bone clothed clothing coffee_mug container cup dialogue duo english_text fan_character hi_res holding_container holding_cup holding_object loverofpiggies not_furry sans_(underfell) science_sans skeleton text undead underfell undertale undertale_(series) 5:4 absurd_res alternate_universe animated_skeleton bone clothed clothing coffee_mug container cup dialogue duo english_text fan_character hi_res holding_container holding_cup holding_object loverofpiggies not_furry sans_(underfell) science_sans skeleton text undead underfell undertale undertale_(series) 5:4 absurd_res alternate_universe animated_skeleton bone clothed clothing coffee_mug container cup dialogue duo english_text fan_character hi_res holding_container holding_cup holding_object loverofpiggies not_furry sans_(underfell) science_sans skeleton text undead underfell undertale undertale_(series) 5:4 absurd_res alternate_universe animated_skeleton bone clothed clothing coffee_mug container cup dialogue duo english_text fan_character hi_res holding_container holding_cup holding_object loverofpiggies not_furry sans_(underfell) science_sans skeleton text undead underfell undertale undertale_(series) 5:4 absurd_res alternate_universe animated_skeleton bone clothed clothing coffee_mug container cup dialogue duo english_text fan_character hi_res holding_container holding_cup holding_object humanoid loverofpiggies not_furry sans_(underfell) science_sans skeleton text undead underfell undertale undertale_(series) alternate_universe ambiguous_gender animated_skeleton bone clothing comic elemental_creature english_text flora_fauna flower flowey_the_flower flowey_the_flower_(underfell) frisk_(undertale) hi_res human male mammal monochrome papyrus_(underfell) papyrus_(undertale) plant protagonist_(underfell) red_eyes sans_(underfell) sans_(undertale) simple_background skeleton text undead underfell undertale undertale_(series) unknown_artist white_background alternate_universe animated_skeleton anterior_nasal_aperture bone clothing duo elemental_creature english_text flora_fauna flower flower_creature flowey_the_flower flowey_the_flower_(underfell) footwear gold_(metal) gold_tooth hi_res humanoid male not_furry open_mouth plant red_eyes sans_(underfell) sans_(undertale) shoes simple_background skeleton text undead underfell undertale undertale_(series) unknown_artist white_background yelling absurd_res alternate_universe animated_skeleton bone cape clothing gaster_blaster happy hi_res hoodie not_furry open_mouth papyrus_(underfell) papyrus_(undertale) sans_(underfell) sans_(undertale) skeleton smile snow snowing topwear tu-ie undead underfell undertale undertale_(series) weapon ahen3251 alternate_universe animated_skeleton bodily_fluids bone clothed clothing duo hi_res hoodie male not_furry sans_(underfell) sans_(undertale) simple_background skeleton sweat topwear undead underfell undertale undertale_(series) 6:5 alternate_universe animated_skeleton blush bone brother_(lore) brothers_(lore) clothing duo english_text evilbeetle eyes_closed heart_symbol hi_res hug humanoid incest_(lore) kissing male male/male not_furry papyrus_(underfell) papyrus_(undertale) sans_(underfell) sans_(undertale) sibling_(lore) simple_background skeleton smile text undead underfell undertale undertale_(series) white_background 2017 alternate_universe animated_skeleton annoyed bad_metadata biped black_background black_sclera blush bone brown_clothing brown_topwear chinese chinese_text clothed clothing digital_media_(artwork) front_view frown glowing glowing_eyes gold_(metal) gold_tooth gradient_background half-length_portrait hands_behind_back hi_res hoodie humanoid jacket light lighting looking_at_viewer male missing_sample mitu_mao not_furry open_clothing open_jacket open_topwear orange_eyes portrait red_background red_clothing red_topwear sans_(underfell) sans_(undertale) shadow sharp_teeth shirt simple_background skeleton solo standing teeth text topwear translated undead underfell undershirt undertale undertale_(series) 2017 2d_animation alternate_universe animated animated_skeleton anterior_nasal_aperture biped black_sclera blinking blush bodily_fluids bone brown_clothing brown_topwear bust_portrait chinese clenched_teeth clothed clothing digital_drawing_(artwork) digital_media_(artwork) front_view frown gold_(metal) gold_tooth hoodie humanoid looking_at_viewer looking_up male mitu_mao not_furry portrait red_clothing red_eyes red_topwear sans_(underfell) sans_(undertale) sharp_teeth shirt short_playtime simple_background skeleton skull solo standing sweat sweatdrop teeth thinking topwear undead underfell undershirt undertale undertale_(series) white_background alternate_universe animated_skeleton anthro bone boss_monster_(undertale) bottomwear bovid breasts caprine clothed clothing duo elemental_manipulation female fire fire_manipulation fog footwear fur gaster_blaster gold_(metal) gold_tooth hi_res hoodie horn male mammal red_eyes renrink robe sans_(underfell) sans_(undertale) shoes shorts signature skeleton skull smile sneakers topwear toriel undead underfell undertale undertale_(series) white_body white_fur alternate_universe animated_skeleton bald blush bodily_fluids bone clothed clothing collar erection genitals hi_res humanoid humanoid_genitalia humanoid_penis kori-nio looking_at_viewer male not_furry penis sans_(underfell) simple_background skeleton smile solo sweat teeth undead underfell undertale undertale_(series) alternate_universe ambiguous_gender animated_skeleton black_eyes blush bone brown_hair clothed clothing covering covering_eyes covering_face elemental_creature flora_fauna flower flowey_the_flower frisk_(undertale) green_eyes group hair human jolliapplegirl lying male mammal not_furry on_back plant sad sans_(underfell) sharp_teeth skeleton smile teeth undead underfell undertale undertale_(series) alternate_universe animated_skeleton bone drakoonlord extreme_size_difference human humanoid low_res mammal monster not_furry open_mouth oral_vore red_eyes sans_(underfell) sharp_teeth size_difference skeleton teeth tongue tongue_out undead underfell undertale undertale_(series) vore 16:9 alternate_universe apode blush bone draconcopode drakoonlord glowing glowing_eyes humanoid legless male monster naga open_mouth oral_vore red_eyes reptile sans_(underfell) sans_(underswap) scalie serpentine sharp_teeth skeleton snake teeth tongue tongue_out underfell underswap undertale undertale_(series) vore widescreen alternate_universe animated_skeleton anterior_nasal_aperture black_and_white bone clothed clothing crossed_arms front_view humanoid jacket jazzycat male monochrome not_furry sans_(underfell) simple_background skeleton solo sweater teeth topwear undead underfell undertale undertale_(series) white_background alternate_universe anal anal_penetration animated_skeleton blush bodily_fluids bone clothed clothed_sex clothing cum duo genital_fluids hands_behind_back heart_eyes heart_symbol male male/male male_penetrated male_penetrating male_penetrating_male not_furry penetration rough_sex saliva sans_(underfell) sans_(undertale) selfcest sex skeleton square_crossover sweat tears undead underfell undertale undertale_(series) unusual_bodily_fluids unusual_cum unusual_genital_fluids 2016 4_fingers 5_fingers abstract_background alternate_universe animated_skeleton anthro belt black_sclera blush bone boss_monster_(undertale) bottomwear bovid breasts caprine cigar clothed clothing duo eyeshadow fangs female fingers flower fur half-closed_eyes heart_symbol hi_res horn jacket larger_female makeup male mammal markings mature_anthro mature_female mole_(marking) narrowed_eyes pants plant red_eyes robe sans_(underfell) signature size_difference skeleton smaller_male smile smoking snowystoat sweater teeth topwear toriel_(underfell) turtleneck undead underfell undertale undertale_(series) white_body white_fur yellow_sclera 1:2 alternate_universe animated_skeleton blush bone clothing heart_symbol humanoid incest_(lore) kissing kissing_neck male not_furry nsfwshamecave papyrus_(underfell) papyrus_(underswap) papyrus_(undertale) question_mark sans_(underfell) sans_(underswap) sans_(undertale) skeleton surprise undead underfell underswap undertale undertale_(series) 5:4 alkipunch alternate_universe animated_skeleton bone erection genitals hi_res humanoid male not_furry penis sans_(underfell) skeleton solo undead underfell undertale undertale_(series) alternate_universe ambiguous_gender animated_skeleton black_sclera bone bottomwear charmander clothing crossover fire flaming_tail footwear generation_1_pokemon gold_(metal) gold_tooth hi_res jacket keksbela nintendo pokemon pokemon_(species) red_eyes sans_(underfell) shoes shorts simple_background skeleton smile sneakers solo sweater tail topwear undead underfell undertale undertale_(series) watermark white_background 2015 alternate_universe ambiguous_gender animated_skeleton blush bodily_fluids bone clothed clothing coat digital_media_(artwork) duo footwear heart_symbol hug human jacket mamaito mammal not_furry protagonist_(underfell) sans_(underfell) shoes skeleton sweat teeth topwear undead underfell undertale undertale_(series) 1:1 alternate_universe animated_skeleton bone cellphone character_cipher dialogue duo earbuds electronics gaster headphones keno9988 monochrome not_furry phone sans_(underfell) skeleton text undead underfell undertale undertale_(series) wingdings_text 16:10 alternate_universe animated_skeleton blush bodily_fluids bone clothed clothed_sex clothing colored_cum cum cum_on_face cum_on_hand cum_on_tongue english_text genital_fluids glowing glowing_eyes group heart_symbol male male/male not_furry nsfwshamecave sans_(underfell) sans_(underlust) sans_(underswap) sans_(undertale) sex skeleton text tongue tongue_out undead underfell underlust underswap undertale undertale_(series) unusual_bodily_fluids unusual_cum unusual_genital_fluids widescreen alien alien_humanoid alternate_universe animated_skeleton army_(steven_universe) bandanna black_sclera bone cartoon_network ckaitlyn clothed clothing crossover dancetale doc_(steven_universe) eyeball_(steven_universe) fully_clothed gans_(echotale) gem_(species) gloves group handwear humanoid inktale kerchief leggy_(steven_universe) mafiatale navy_(steven_universe) not_furry plant rock ruby_(gem_species) ruby_(steven_universe) sans_(mafiatale) sans_(underfell) sans_(underswap) sans_(undertale) signature skeleton snow star steven_universe sweater topwear tree undead underfell underswap undertale undertale_(series) 3:5 ?! alternate_universe animated_skeleton blue_eyes blush bodily_fluids bone caught collar comic dialogue duo ellipsis english_text heart_symbol leash male male/male mistaken_identity not_furry nsfwshamecave papyrus_(underfell) red_eyes sans_(underfell) sans_(underswap) skeleton submissive submissive_male suggestive surprise sweat text undead underfell underswap undertale undertale_(series) 1:1 2_frame_animation alternate_universe angry animated animated_skeleton blue_eyes blush body_part_in_mouth bone brother_(lore) brothers_(lore) clothed clothed_sex clothing collar confusion dominant dominant_male ellipsis erection fellatio genitals group heart_symbol humanoid humanoid_on_humanoid humanoid_penetrated humanoid_penetrating humanoid_penetrating_humanoid incest_(lore) leash loop male male/male male_penetrated male_penetrating male_penetrating_male mistaken_identity not_furry nsfwshamecave oral oral_only oral_penetration papyrus_(underfell) penetration penile penile_penetration penis penis_in_mouth question_mark sans_(underfell) sans_(underswap) sex short_playtime sibling_(lore) skeleton slideshow submissive submissive_male undead underfell underswap undertale undertale_(series) alternate_universe animated_skeleton blush bone brother_(lore) brothers_(lore) comic dialogue english_text incest_(lore) male male/male monster not_furry papyrus_(underfell) papyrus_(undertale) sans_(underfell) sans_(undertale) sex sibling_(lore) skeleton text undead underfell undertale undertale_(series) unknown_artist against_surface against_wall ahegao alternate_universe animated_skeleton blush bone brother_(lore) brothers_(lore) comic dialogue english_text heart_eyes heart_symbol incest_(lore) looking_pleasured male male/male not_furry one_eye_closed papyrus_(underfell) penetration profanity sans_(underfell) sans_(undertale) sex sibling_(lore) skeleton text tongue tongue_out undead underfell undertale undertale_(series) unknown_artist 2016 5:4 alternate_universe animated_skeleton bone duo foxvulpine male not_furry papyrus_(underfell) sans_(underfell) skeleton undead underfell undertale undertale_(series) 2016 5:4 alternate_universe animated_skeleton belt bone boots bottomwear brown_hair clothed clothing duo_focus flowey_the_flower footwear forest foxvulpine fully_clothed gloves group hair hand_in_pocket hands_in_both_pockets handwear human jacket male mammal not_furry outside pants papyrus_(underfell) plant pockets protagonist_(underfell) sans_(underfell) sharp_teeth shirt shoes short_hair shorts shrub side_view size_difference skeleton smile snow teeth topwear tree undead underfell undertale undertale_(series) walking 16:9 alternate_universe animated animated_skeleton anterior_nasal_aperture bone clothed clothing epilepsy_warning errortale gaster_blaster glitch hoodie humanoid jacket kana_the_drifter not_furry sans_(errortale) sans_(underfell) sans_(underswap) sans_(undertale) scarf short_playtime skeleton skull solo string topwear undead underfell underswap undertale undertale_(series) weapon widescreen 5:6 absurd_res alkipunch alternate_universe ambiguous_gender animal_humanoid animated_skeleton arachnid arachnid_humanoid arthropod arthropod_humanoid bone erection fellatio genitals group group_sex hi_res humanoid male male/ambiguous muffet oral penile penis sans_(underfell) sex simple_background skeleton spider spider_humanoid threesome trio undead underfell undertale undertale_(series) ahen3251 alternate_universe animated_skeleton better_version_at_source bodily_fluids bone clothed clothing hi_res hoodie male not_furry sans_(underfell) sans_(undertale) simple_background skeleton sweat topwear undead underfell undertale undertale_(series) alternate_universe animated_skeleton bdsm bondage bone bound dominant dominant_male duo hi_res incest_(lore) male male/male not_furry papyrus_(underfell) razinoats sans_(underfell) skeleton submissive submissive_male undead underfell underswap undertale undertale_(series) 5:4 alternate_universe animated_skeleton better_version_at_source bone clothed clothing coffee_mug container cup dialogue duo english_text fan_character holding_container holding_cup holding_object loverofpiggies not_furry sans_(underfell) science_sans skeleton text undead underfell undertale undertale_(series) 5:4 alternate_universe animated_skeleton better_version_at_source bone clothed clothing coffee_mug container cup dialogue duo english_text fan_character holding_container holding_cup holding_object loverofpiggies not_furry sans_(underfell) science_sans skeleton text undead underfell undertale undertale_(series)