2girls alphys buck_teeth cape clenched_hands closed_labcoat eyepatch flying_sweatdrops glasses grin head_fins human_tower labcoat multiple_girls papyrus_(undertale) ponytail rebecca_(keinelove) red_cape red_footwear red_hair shoes skeleton smile stacking tank_top undertale undyne yellow_sclera  crown papyrus_(undertale) protagonist_(undertale) sans_(undertale) switchtale tagme thegreatrouge undertale video_games  chara_(undertale) crying gaster papyrus_(undertale) sans_(undertale) switchtale tagme tears thegreatrouge undertale video_games  chara_(undertale) clothing crown crying dialogue gaster ill papyrus_(undertale) robe sans_(undertale) sweater switchtale tears thegreatrouge undertale video_games  chara_(undertale) clothing gaster jeans pants papyrus_(undertale) robe sans_(undertale) slippers sneakers sweat sweater switchtale thegreatrouge undertale video_games  <3 animated_skeleton annoying_dog_(undertale) bandanna bone boots canine cigarette clothing dialogue footwear gloves hoodie legwear mammal monochrome papyrus_(undertale) sans_(undertale) shorts skeleton slippers snow socks tabehoudai undead underswap undertale video_games watermark  animated_skeleton bandanna bone boots cigarette clothing footwear gloves hoodie legwear papyrus_(undertale) sans_(undertale) shorts skeleton slippers smoke socks tabehoudai undead underswap undertale video_games watermark  <3 2015 ambiguous_gender animated_skeleton anthro arachnid armless armor arthropod asgore_dreemurr beverage bone boss_monster brown_hair bush canine caprine clothed clothing cobweb dog empty_eyes eyes_closed eyewear fangs female feral fire fish flora flora_fauna flower flowey_the_flower food foot_wear fur ghost glasses gloves goat grass greater_dog grey_hair hair hair_bow hair_ribbon happy his_res holding_object hoodie horn human humanoid lesser_dog light lizard long_ears machine male mammal marine melee_weapon mettaton monster_kid muffet multi_arm multi_eye multi_limb napstablook not_furry nyapapa open_mouth papyrus_(undertale) photoshop_flowey pigtails plant polearm protagonist_(undertale) reptile ribbons robe robot sans_(undertale) scales scalie short signature silhouette skeleton sky slippers smile snow soul spear spider spikes spirit string tea teacup teapot teeth tem temmie_(undertale) tongue tongue_out toriel tree undead undertale undyne video_games weapon white_fur  andy_(heyitscousindave) anthro boots canine clothed clothing cousin_dave duo food footwear fur heyitscousindave hoodie male mammal papyrus_(undertale) pasta raccoon sans_(undertale) simple_background spaghetti tagme undertale video_games wolf  balls bone clothing duo elfein glowing glowing_penis male mammal monster papyrus_(undertale) penis sans_(undertale) simple_background skeleton smile tagme undead undertale video_games  2016 aftertale animated_skeleton bone clothed clothing comic gloves hotpants jacket loverofpiggies male pajamas papyrus_(undertale) sans_(undertale) scarf skeleton undead undertale video_games  2016 aftertale animated_skeleton annoyed bone clothed clothing comic gloves hotpants jacket loverofpiggies male pajamas papyrus_(undertale) sans_(undertale) scarf skeleton undead undertale video_games  after_sex anal anal_penetration animated_skeleton bed bedroom blush bone clothed clothed_sex clothing colored_cum cum cum_inside cum_on_face cum_on_self fontcest incest lizherubones magic_penis papyrus_(undertale) penetration penis sans_(undertale) sex skeleton undead undertale unusual_cum video_games watermark  animated_skeleton armor bone boots bottle clothing duo energetic footwear gloves honey hoodie male min-play_(artist) papyrus_(undertale) sans_(undertale) shorts skeleton skull undead underswap undertale video_games  afterswap aftertale animated_skeleton bandanna blood bone cigarette dialogue english_text loverofpiggies papyrus_(undertale) skeleton smoking text undead undertale video_games wounded  aftertale animated_skeleton bone clothed clothing gloves hotpants loverofpiggies male nightcap papyrus_(undertale) poster shirt skeleton undead undertale video_games  aftertale animated_skeleton bone clothed clothing depression door gloves hotpants loverofpiggies male nightcap papyrus_(undertale) scarf shirt skeleton surprise television undead undertale video_games  afterswap aftertale animated_skeleton bandanna blood bone cigarette clothing loverofpiggies papyrus_(undertale) skeleton smoking undead undertale video_games  <3 alphys arachnid arthropod asgore_dreemurr bone caprine goat machine mammal melee_weapon mettaton papyrus_(undertale) pdubbsquared polearm protagonist_(undertale) robot skeleton spear spider tongue toriel undertale undyne video_games weapon  animated_skeleton bone duo english_text male papyrus_(undertale) sans_(undertale) sir_the_artist skeleton text undead undertale video_games  2016 animated_skeleton bone male papyrus_(undertale) sir_the_artist skeleton solo undead undertale video_games  2016 animated_skeleton bone male papyrus_(undertale) reaction_image sir_the_artist skeleton solo undead undertale video_games  2016 animated_skeleton bone male papyrus_(undertale) reaction_image sir_the_artist skeleton solo undead undertale video_games  2016 animated_skeleton bone duo english_text male papyrus_(undertale) sans_(undertale) sir_the_artist skeleton text undead undertale video_games  ambiguous_gender bone dialogue english_text female fish human humming-bird male mammal marine papyrus_(undertale) protagonist_(undertale) simple_background sitting skeleton text undertale undyne video_games  ambiguous_gender anthro bone clothing dialogue english_text female fish flexing human humming-bird male mammal marine papyrus_(undertale) protagonist_(undertale) simple_background sitting skeleton text undertale undyne video_games  ambiguous_gender anthro bone clothing dialogue english_text female fish flexing human humming-bird male mammal marine papyrus_(undertale) protagonist_(undertale) simple_background sitting skeleton text undertale undyne video_games  ambiguous_gender anthro bone clothing dialogue english_text female fish human humming-bird male mammal marine papyrus_(undertale) protagonist_(undertale) simple_background sitting skeleton text undertale undyne video_games  ambiguous_gender anthro bone clothing dialogue english_text female fish human humming-bird male mammal marine papyrus_(undertale) protagonist_(undertale) simple_background sitting skeleton text undertale undyne video_games  ambiguous_gender anthro bone clothing dialogue english_text female fish human humming-bird male mammal marine papyrus_(undertale) protagonist_(undertale) simple_background sitting skeleton text undertale undyne video_games  anal anal_penetration animated_skeleton blush bone clothed clothed_sex clothing cowboy fontcest incest magic_flesh magic_penis male male/male not_furry nsfwshamecave oral panting papyrus_(undertale) penetration penis precum sans_(undertale) semi_incest sex skeleton sweat tongue tongue_out undead underfell underswap undertale video_games  :d ahoge airfield_hime alternate_costume cake claws commentary_request cosplay crossover enemy_aircraft_(kantai_collection) flower flowey_(undertale) food goat_girl heterochromia hood hooded_jacket horn horns jacket kantai_collection long_hair looking_at_viewer mittens multiple_girls northern_ocean_hime o3o open_mouth orange_eyes papyrus_(undertale) papyrus_(undertale)_(cosplay) parody sans sans_(cosplay) scarf seaport_hime shinkaisei-kan smile tomoyohi toriel toriel_(cosplay) twitter_username undertale white_hair white_skin  animated_skeleton blue_eyes blush bone caught clothing comic dialogue english_text male nsfwshamecave papyrus_(undertale) sans_(undertale) skeleton text undead underfell underswap undertale video_games  animated_skeleton blue_eyes blush bone clothing comic dialogue english_text male nsfwshamecave papyrus_(undertale) sans_(undertale) skeleton sweat text undead underfell underswap undertale video_games  <3 ... ?! animated_skeleton blue_eyes blush bone caught collar comic fontcest leash male male/male mistaken_identity nsfwshamecave papyrus_(undertale) red_eyes sans_(undertale) skeleton suggestive surprise sweat undead underfell underswap undertale video_games  <3 ... ? angry animated animated_skeleton blue_eyes blush bone clothed clothed_sex clothing collar confusion fellatio fontcest group leash mistaken_identity nsfwshamecave oral papyrus_(undertale) penis sans_(undertale) semi_incest sex skeleton undead underfell underswap undertale video_games  <3 ... 2016 ?! animated_skeleton blush bone clothing comparison computer dialogue english_text food hot_dog male onomatopoeia papyrus_(undertale) sans_(undertale) skeleton sound_effects suggestive text tongue tongue_out undead undertale unknown_artist video_games  animated_skeleton anthro armor asriel_dreemurr barefoot blue_eyes bone boss_monster brown_eyes caprine castle clothed clothing collaboration fangs female flora_fauna flower flowey_the_flower food fur glowing glowing_eyes group hand_holding horn long_ears looking_at_viewer male mammal papyrus_(undertale) pasta plant plate protagonist_(undertale) rear_view ry-spirit sans_(undertale) scarf short_tail skeleton smile spaghetti sweater toriel tsaoshin undead undertale undyne video_games walking white_fur  alphys angry armor barefoot chef_hat clothed clothing comic dancing drake_(disambiguation) english_text exercise eye_patch eyewear female food glasses hat headphones leash melee_weapon music papyrus_(undertale) pasta phone polearm reptile sans_(undertale) sanspar scalie scarf screaming shirt shorts spaghetti spear tank_top text undertale undyne video_games weapon workout  animated_skeleton bed blush bone caught clothing colored_penis dialogue duo english_text fifithemantis fontcest imminent_sex incest male male/male masturbation papyrus_(undertale) penis sans_(undertale) simple_background skeleton surprise text undead undertale video_games  absurd_res angry animated_skeleton armor bone clothing comic fury gloves herbs hi_res hoodie male papyrus_(undertale) sans_(undertale) scarf skeleton spices supersmashwolves undead undertale video_games  anal anal_penetration animated_skeleton bed blush bone clothed clothed_sex clothing duo fontcest incest lizherubones magic_penis male male/male papyrus_(undertale) penetration penis sans_(undertale) sex skeleton undead undertale video_games