alternate_universe animated_skeleton bone clothing duo english_text footwear gold_(metal) gold_tooth male not_furry open_mouth papyrus_(underfell) sans_(underfell) shoes simple_background skeleton text undead underfell undertale undertale_(series) unknown_artist white_background
2015 alternate_universe animated_skeleton bone clothed clothing dialogue elemental_creature ellipsis english_text exclamation_point female flora_fauna flowey_the_flower frisk_(undertale) group half-closed_eyes human humor looking_at_viewer male mammal narrowed_eyes not_furry papyrus_(underfell) pastel-possum plant simple_background skeleton text undead underfell undertale undertale_(series) white_background
2015 alternate_universe animated_skeleton bone brown_hair clothed clothing dialogue elemental_creature ellipsis english_text exclamation_point female flora_fauna flower flowey_the_flower frisk_(undertale) group hair half-closed_eyes human humor looking_at_viewer male mammal narrowed_eyes not_furry papyrus_(underfell) pastel-possum plant simple_background skeleton text undead underfell undertale undertale_(series) white_background
2015 alternate_universe animated_skeleton anthro aquatic asgore_(underfell) bone boss_monster_(undertale) bovid caprine chibimu clothing doctor_alphys_(underfell) english_text eyewear female fish fur glasses group happy horn male mammal mettaton_(underfell) mettaton_ex_(underfell) papyrus_(underfell) sans_(underfell) skeleton smile teeth text toriel_(underfell) undead underfell undertale undertale_(series) undyne_(underfell) white_body white_fur
4:5 alternate_universe animated_skeleton bone chibimu english_text looking_at_viewer not_furry papyrus_(underfell) simple_background skeleton solo text undead underfell undertale undertale_(series) white_background
alternate_universe animated_skeleton black_background bone clothing hi_res humanoid lynxieles not_furry papyrus_(underfell) simple_background skeleton solo undead underfell undertale undertale_(series)
alternate_universe animated_skeleton bone clothing comic dialogue english_text male mamaito not_furry papyrus_(underfell) simple_background skeleton text undead underfell undertale undertale_(series) white_background
5:6 alternate_universe animated_skeleton bone clothing comic dialogue ellipsis english_text male mamaito not_furry papyrus_(underfell) simple_background skeleton text undead underfell undertale undertale_(series) white_background
5:6 alternate_universe animated_skeleton bone clothing comic dialogue ellipsis english_text male mamaito not_furry papyrus_(underfell) simple_background skeleton solo text undead underfell undertale undertale_(series) white_background
5:6 alternate_universe animated_skeleton bone clothing comic dialogue ellipsis english_text male mamaito not_furry papyrus_(underfell) simple_background skeleton solo text undead underfell undertale undertale_(series) white_background
5:6 alternate_universe animated_skeleton bone clothing comic duo ellipsis human male mamaito mammal not_furry papyrus_(underfell) simple_background skeleton text undead underfell undertale undertale_(series) white_background
5:6 alternate_universe animated_skeleton bone clothing comic duo ellipsis hug human male mamaito mammal papyrus_(underfell) simple_background skeleton text undead underfell undertale undertale_(series) white_background
5:6 alternate_universe animated_skeleton bone clothing comic duo ellipsis hug human male mamaito mammal papyrus_(underfell) simple_background skeleton text undead underfell undertale undertale_(series) white_background
1:1 2015 alternate_universe animated_skeleton bone clothed clothed_male clothing colored digital_drawing_(artwork) digital_media_(artwork) duo english_text foxtragic fully_clothed fully_clothed_male glowing glowing_eyes light lighting male not_furry papyrus_(underfell) sans_(undertale) shaded shocked skeleton surprised text undead underfell undertale undertale_(series) violence white_body
2015 3:2 alternate_universe angry animated_skeleton bone cape cigarette clothed clothing digital_media_(artwork) english_text fan_character fantasytale food gloves handwear heart_symbol hoodie littletale male not_furry outertale papyrus_(fantasytale) papyrus_(font) papyrus_(outertale) papyrus_(underfell) papyrus_(underswap) papyrus_(undertale) pasta sans_(littletale) scarf skeleton smile spaghetti text toono_(artist) topwear undead underfell underswap undertale undertale_(series)
2015 alternate_universe angry animated_skeleton bone boots clothing duo english_text fan_character footwear gloves handwear hoodie ice male not_furry paint paint_can papyrus_(underfell) rachel_yew_(artist) red_clothing red_gloves red_handwear sans_(underfell) shoes skeleton smile text topwear undead underfell undertale undertale_(series)
alternate_universe animated_skeleton bone clothing gloves handwear hi_res humanoid kiatokid male not_furry papyrus_(underfell) scarf sharp_teeth skeleton solo teeth text undead underfell undertale undertale_(series)
alternate_universe android animated_skeleton blush bone clothing digital_media_(artwork) duo erection fangs genitals hair hotlegmeme humanoid machine male male/male metallic_body mettaton_(underfell) mettaton_ex_(underfell) multi_arm multi_limb not_furry open_mouth papyrus_(underfell) penis robot simple_background skeleton smile teeth tongue tongue_out undead underfell undertale undertale_(series) white_background
alternate_universe anal anal_penetration android animated_skeleton blush bone clothed clothing digital_media_(artwork) duo genitals hair heart_symbol hotlegmeme humanoid machine male male/male male_penetrated male_penetrating male_penetrating_male mettaton_(underfell) mettaton_ex_(underfell) multi_arm multi_eye multi_limb not_furry open_mouth papyrus_(underfell) penetration penis robot sex simple_background skeleton teeth undead underfell undertale undertale_(series) white_background
alternate_universe animated_skeleton bone fan_character group hi_res male papyrus_(underfell) papyrus_(underswap) papyrus_(undertale) razinoats skeleton tentacles trio undead underfell underswap 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)
alternate_universe animated_skeleton belt black_sclera bone clothing fan_character korhiper not_furry papyrus_(underfell) red_eyes scar scarf sharp_teeth skeleton snow solo teeth undead underfell undertale undertale_(series)
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
alternate_universe animated_skeleton blush bone brother_(lore) brothers_(lore) comic dialogue english_text incest_(lore) male male/male monster not_furry oolay-tiger papyrus_(underfell) papyrus_(undertale) sans_(underfell) sans_(undertale) sex sibling_(lore) skeleton text undead underfell undertale undertale_(series)
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 oolay-tiger papyrus_(underfell) penetration profanity sans_(underfell) sans_(undertale) sex sibling_(lore) skeleton text tongue tongue_out undead underfell undertale undertale_(series)
3:5 alternate_universe animated_skeleton blue_eyes blush bone caught_in_the_act clothing comic dialogue english_text male not_furry nsfwshamecave papyrus_(underfell) sans_(underswap) skeleton text undead underfell underswap undertale undertale_(series)
3:5 alternate_universe animated_skeleton blue_eyes blush bodily_fluids bone clothing comic dialogue english_text male not_furry nsfwshamecave papyrus_(underfell) sans_(underswap) skeleton sweat text undead underfell underswap undertale undertale_(series)
3:5 alternate_universe animated_skeleton blue_eyes blush bodily_fluids bone caught_in_the_act collar comic dialogue duo ellipsis english_text heart_symbol interrobang leash male male/male mistaken_identity multiple_scenes not_furry nsfwshamecave papyrus_(underfell) red_eyes sans_(underfell) sans_(underswap) skeleton submissive submissive_male suggestive surprised sweat text undead underfell underswap undertale undertale_(series)
1:1 2_frame_animation alternate_universe angry animated animated_gif animated_skeleton blue_eyes blush 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 anal anal_penetration animated_skeleton blush bodily_fluids bone breath clothed clothed_sex clothing cowboy digital_media_(artwork) duo erection genital_fluids genitals hi_res magic magic_flesh magic_penis male male/male male_penetrated male_penetrating male_penetrating_male not_furry nsfwshamecave oral panting papyrus_(underfell) papyrus_(underswap) papyrus_(undertale) penetration penis precum pseudo_incest_(lore) sans_(underswap) sex skeleton sweat tongue tongue_out undead underfell underswap undertale undertale_(series)
2016 alternate_universe animated_skeleton blush bone clothing erection genitals glowing glowing_genitalia glowing_penis hi_res humanoid_genitalia humanoid_penis magic magic_penis male masturbation not_furry orange_penis papyrus_(underfell) penile penile_masturbation penis skeleton solo soul soul_lick undead underfell undertale undertale_(series) unknown_artist
2016 alcohol alternate_universe animated_skeleton beverage bone clothed clothing comic container cup cutlery dialogue english_text food fork gloves handwear hoodie kitchen_utensils min-play_(artist) not_furry papyrus_(underfell) papyrus_(underswap) papyrus_(undertale) pasta scar scarf skeleton spaghetti speech_bubble text tools topwear undead underfell underswap undertale undertale_(series)
2016 alcohol alternate_universe animated_skeleton beverage bone clothed clothing comic container cup cutlery dialogue english_text food fork gloves handwear hoodie kitchen_utensils min-play_(artist) not_furry papyrus_(underfell) papyrus_(underswap) papyrus_(undertale) pasta scar scarf skeleton spaghetti speech_bubble text tools topwear undead underfell underswap undertale undertale_(series)
alternate_universe animated_skeleton bone clothing comic dialogue english_text hoodie min-play_(artist) not_furry papyrus_(underfell) papyrus_(underswap) scar scarf skeleton text topwear undead underfell underswap undertale undertale_(series)
2016 alternate_universe animated animated_comic animated_gif animated_skeleton bone bottomwear clothed clothing comic dialogue english_text hoodie humor min-play_(artist) not_furry pants papyrus_(underfell) papyrus_(underswap) papyrus_(undertale) pun scarf short_playtime skeleton speech_bubble text topwear undead underfell underswap undertale undertale_(series)
alpha_channel alternate_universe animated_skeleton bone humanoid male not_furry papyrus_(underfell) skeleton smeme solo undead underfell undertale undertale_(series)
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 surprised undead underfell underswap 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
absurd_res alternate_universe animated_skeleton bone cigarette clothing collar dialogue digital_media_(artwork) duo english_text food hi_res humanoid lasagna nearlydeadzed not_furry papyrus_(font) papyrus_(underfell) papyrus_(underswap) papyrus_(undertale) pasta ravioli sans_(underswap) sans_(undertale) skeleton smile smoking spaghetti taco text unavailable_at_source undead underfell underswap 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 ambiguous_gender animated_skeleton bettycrockerssketchbook bone clothing digital_media_(artwork) duo_focus elemental_creature english_text flora_fauna flower flowey_the_flower flowey_the_flower_(underfell) frisk_(undertale) group hi_res human mammal not_furry papyrus_(underfell) papyrus_(undertale) plant protagonist_(underfell) skeleton snow text undead underfell undertale undertale_(series)
absurd_res alternate_universe animated_skeleton bone cape clothing digital_media_(artwork) english_text gaster_blaster happy hi_res hoodie not_furry open_mouth papyrus_(font) papyrus_(underfell) papyrus_(undertale) sans_(underfell) sans_(undertale) skeleton smile snow snowing text topwear tu-ie undead underfell undertale undertale_(series) weapon
2015 alternate_universe ambiguous_gender animal_humanoid animated_skeleton aquatic aquatic_humanoid backpack_(dora_the_explorer) bone clothing door dora_the_explorer english_text evanescence eye_patch eyewear female fish fish_humanoid footwear frisk_(undertale) group hi_res human humanoid humor mammal music open_mouth papyrus_(underfell) papyrus_(undertale) protagonist_(underfell) ricksancheeze shoes skeleton tem temmie_(underfell) temmie_(undertale) text undead underfell undertale undertale_(series) undyne undyne_(underfell) yelling
alternate_universe animated_skeleton bone brother_(lore) brothers_(lore) genitals group humanoid humanoid_genitalia humanoid_penis incest_(lore) lizheru male male/male not_furry orange_penis papyrus_(underfell) papyrus_(underswap) papyrus_(undertale) penis sans_(undertale) sibling_(lore) skeleton undead underfell underswap undertale undertale_(series)
alternate_universe anal anal_penetration animated_skeleton balls blush bodily_fluids bone bottomless bound clothed clothing dialogue digital_media_(artwork) english_text erection fangs fellatio fingerless_gloves genitals gloves glowing glowing_eyes grey_background group group_sex hands_tied handwear heart_eyes heart_symbol humanoid_genitalia humanoid_penis male male/male male_penetrated male_penetrating male_penetrating_male moan not_furry one_eye_closed open_mouth oral papyrus_(underfell) penetration penile penis penis_grab purple_eyes purple_penis purple_tongue red_eyes sans_(underfell) sans_(underlust) sans_(undertale) sex signature simple_background skeleton source_request speech_bubble tears teeth text threesome tongue trio undead underfell underlust undertale undertale_(series) unknown_artist unknown_artist_signature
alternate_universe animated_skeleton bone duo hi_res lizheru not_furry papyrus_(underfell) papyrus_(underswap) skeleton undead underfell underswap undertale undertale_(series)
alternate_universe animated_skeleton bed bedroom_sex blush bone clothing duo_focus english_text furniture group lizheru male male/male not_furry papyrus_(underfell) papyrus_(undertale) sans_(underfell) sans_(undertale) selfcest skeleton speech_bubble square_crossover text undead underfell undertale undertale_(series)
1:1 alternate_universe animated_skeleton bone english_text group lizheru not_furry papyrus_(underfell) papyrus_(underswap) papyrus_(undertale) sans_(underfell) sans_(underswap) sans_(undertale) skeleton text undead underfell underswap undertale undertale_(series)
1:1 alternate_universe animated_skeleton bone english_text lizheru not_furry papyrus_(underfell) papyrus_(underswap) sans_(underfell) sans_(undertale) skeleton text undead underfell undertale undertale_(series)
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