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... ? accidental_circumstance accidental_incest angry animated animated_skeleton blue_eyes blue_sans_penis blue_sans_tongue blush bone clothed clothed_sex clothing collar confusion fellatio gay gif group heart incest leash male male/male male_only meta_request mistaken_identity multiple_boys nsfwshamecave oral papyrus_(underfell) papyrus_au penis sans sans_(underfell) sans_au sans_blush sans_eye sans_glowing_eye sans_penis sans_tongue semi_incest skeleton undead undertale yaoi
... ? accidental_circumstance accidental_incest angry animated animated_skeleton blue_eyes blue_sans_penis blue_sans_tongue blush bone clothed clothed_sex clothing collar confusion fellatio gay gif group heart incest leash male male/male male_only meta_request mistaken_identity multiple_boys nsfwshamecave oral papyrus_(underfell) papyrus_au penis sans sans_(underfell) sans_au sans_blush sans_eye sans_glowing_eye sans_penis sans_tongue semi_incest skeleton undead undertale yaoi
1boy 2016 animated_skeleton black_background black_tentacles blue_blush blue_dick blue_eyes blue_penis blue_pupils blue_sans_penis blue_sans_tongue blue_testicles blue_tongue blush clothed crying crying_with_eyes_open drooling ectopenis ectotongue heart heki_(artist) looking_down male male_focus male_only meta_request miss60250 moaning nightmare_sans nightmare_sans_(fan_character) penis penis_out sans sans_(undertale) sans_blush sans_eye sans_glowing_eye sans_penis skeleton solo_focus soul sweat tears tentacle tentacles_around_arms tentacles_around_wrists tentacles_on_male text tongue tongue_out undertale undertale_(series)
1boy 2016 animated_skeleton black_background black_tentacles blue_blush blue_dick blue_eyes blue_penis blue_pupils blue_sans_penis blue_sans_tongue blue_testicles blue_tongue blush clothed crying crying_with_eyes_open drooling ectopenis ectotongue heart heki_(artist) looking_down male male_focus male_only meta_request miss60250 moaning nightmare_sans nightmare_sans_(fan_character) penis penis_out sans sans_(undertale) sans_blush sans_eye sans_glowing_eye sans_penis skeleton solo_focus soul sweat tears tentacle tentacles_around_arms tentacles_around_wrists tentacles_on_male text tongue tongue_out undertale undertale_(series)
2020 5_fingers absurd_res animated_skeleton anthro artist_name ass ass_squeeze bed bed_sheet bedroom between_ass between_buttocks big_ass big_breasts big_butt blue_eyes blue_glow blue_hoodie blue_sans_penis blue_sans_tongue bovid bovid_humanoid breasts buttjob buttjob_under_clothes caprine caprine_humanoid clothed clothed_male clothed_male_nude_female clothed_sex clothes clothing costume covered_buttjob daddy_kink dat_ass dialogue digital_media_(artwork) duo english_text eyebrows eyelashes female floppy_ears fur glowing_eye goat goat_ears goat_horns goat_humanoid goat_tail halloween hands_on_ass hi_res holidays hoodie huge_ass huge_butt humanoid lightsaber_dick looking_at_partner looking_back looking_to_the_side male meta_request mummy_costume nude nude_female on_bed outercourse penis penis_between_ass precum precum_bubble sans sans_blush sans_eye sans_glowing_eye sans_penis sans_tongue sex short_tail skeleton smiling speech_bubble tail text text_bubble toriel undertale veiny_penis white_fur white_skin wide_hips witdrawsloods yellow_eyes
2020 5_fingers absurd_res animated_skeleton anthro artist_name ass ass_squeeze bed bed_sheet bedroom between_ass between_buttocks big_ass big_breasts big_butt blue_eyes blue_glow blue_hoodie blue_sans_penis blue_sans_tongue bovid bovid_humanoid breasts buttjob buttjob_under_clothes caprine caprine_humanoid clothed clothed_male clothed_male_nude_female clothed_sex clothes clothing costume covered_buttjob daddy_kink dat_ass dialogue digital_media_(artwork) duo english_text eyebrows eyelashes female floppy_ears fur glowing_eye goat goat_ears goat_horns goat_humanoid goat_tail halloween hands_on_ass hi_res holidays hoodie huge_ass huge_butt humanoid lightsaber_dick looking_at_partner looking_back looking_to_the_side male meta_request mummy_costume nude nude_female on_bed outercourse penis penis_between_ass precum precum_bubble sans sans_blush sans_eye sans_glowing_eye sans_penis sans_tongue sex short_tail skeleton smiling speech_bubble tail text text_bubble toriel undertale veiny_penis white_fur white_skin wide_hips witdrawsloods yellow_eyes
alternate_universe ass big_ass big_breasts big_butt big_hips big_thighs blue_ass blue_body blue_eyes blue_genitals blue_iris blue_sans_penis blue_sans_tongue blush breasts ectobody ectobreasts ectobutt female female_sans gigantic_ass gloves happy huge_ass huge_breasts huge_hips huge_thighs latex latex_suit leaning_forward meta_request no_hair no_humans rule_63 sans sans_(underswap) sans_glowing_eye scarf shaded skeleton solo thiccberry twerking underswap underswap_sans undertale undertale_(series) undertale_au
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1boy 2d alternate_universe animated_skeleton annoyed annoyed_expression annoyed_face anthro balls bell_collar big_balls big_penis blue_eyes blue_sans_penis blue_sans_tongue collar dg_ring dreamtale ectopenis huge_penis humanoid large_penis male male_only meta_request nightmare_sans nightmare_sans_(fan_character) penis pet_collar pink_collar sans sans_au sans_glowing_eye simple_background skeleton solo tagme tentacles testicles throbbing_penis undertale_(series) undertale_au veiny_penis
1boy 2d alternate_universe animated_skeleton annoyed annoyed_expression annoyed_face anthro balls bell_collar big_balls big_penis blue_eyes blue_sans_penis blue_sans_tongue collar dg_ring dreamtale ectopenis huge_penis humanoid large_penis male male_only meta_request nightmare_sans nightmare_sans_(fan_character) penis pet_collar pink_collar sans sans_au sans_glowing_eye simple_background skeleton solo tagme tentacles testicles throbbing_penis undertale_(series) undertale_au veiny_penis
2010s 2018 animated_skeleton blue_blush blue_eyes blue_hoodie blue_jacket blue_sans_penis blue_sans_tongue blue_tongue blush clothed cussing drooling eye_fucking eye_penetration gay heart-shaped_pupils heart_eyes hooded_jacket hoodie jacket male male_penetrated meta_request monster penis penis_in_eye sans sans_(undertale) sans_glowing_eye skeleton skull_fucking solo_focus swearing text tongue tongue_out undead undertale undertale_(series) unknown_artist unseen_male unseen_male_face upper_body visible_breath white_background
2010s 2018 animated_skeleton blue_blush blue_eyes blue_hoodie blue_jacket blue_sans_penis blue_sans_tongue blue_tongue blush clothed cussing drooling eye_fucking eye_penetration gay heart-shaped_pupils heart_eyes hooded_jacket hoodie jacket male male_penetrated meta_request monster penis penis_in_eye sans sans_(undertale) sans_glowing_eye skeleton skull_fucking solo_focus swearing text tongue tongue_out undead undertale undertale_(series) unknown_artist unseen_male unseen_male_face upper_body visible_breath white_background
2boys animated_skeleton anterior_nasal_aperture asgore_dreemurr beard black_eyes blonde_beard blonde_hair blue_eyes blue_penis blue_sans_penis blue_sans_tongue blush blushing bodily_fluids bodily_fluids_in_mouth bone bones boss_monster caprine clothing dialogue duo duo_focus embarrassed english_text facial_hair fur furry gay glowing glowing_eyes glowing_genitalia glowing_penis goat hoodie horn lightsaber_dick long_ears looking_at_another looking_at_partner male male_focus male_only mammal meta_request pants pants_open penis sans sans_glowing_eye simple_background skeleton slightly_chubby smile smiling speech_bubble sweat sweatdrop sweatshirt teeth text tongue topwear undead undertale video_game video_games white_fur yaoi
2boys animated_skeleton anterior_nasal_aperture asgore_dreemurr beard black_eyes blonde_beard blonde_hair blue_eyes blue_penis blue_sans_penis blue_sans_tongue blush blushing bodily_fluids bodily_fluids_in_mouth bone bones boss_monster caprine clothing dialogue duo duo_focus embarrassed english_text facial_hair fur furry gay glowing glowing_eyes glowing_genitalia glowing_penis goat hoodie horn lightsaber_dick long_ears looking_at_another looking_at_partner male male_focus male_only mammal meta_request pants pants_open penis sans sans_glowing_eye simple_background skeleton slightly_chubby smile smiling speech_bubble sweat sweatdrop sweatshirt teeth text tongue topwear undead undertale video_game video_games white_fur yaoi
bedroom blue_eyes blue_sans_penis blue_sans_tongue blush bone comic english_text fellatio gay incest licking lizherubones male meta_request monster oral papyrus_au penis rubbing sans sans_au sans_blush sans_eye sans_glowing_eye sans_penis sans_tongue sex sibling skeleton sleeping sucking text tongue tongue_out underswap undertale_au video_games
bedroom blue_eyes blue_sans_penis blue_sans_tongue blush bone comic english_text fellatio gay incest licking lizherubones male meta_request monster oral papyrus_au penis rubbing sans sans_au sans_blush sans_eye sans_glowing_eye sans_penis sans_tongue sex sibling skeleton sleeping sucking text tongue tongue_out underswap undertale_au video_games
anal anal_sex bed blue_eyes blue_sans_penis blue_sans_tongue blush bone brothers comic dialogue gay heart incest kissing lizheru_(artist) lying male meta_request papyrus_au penetration penis sans sans_au sans_blush sans_eye sans_glowing_eye sans_penis sans_tongue sitting skeleton sweat tears text tongue underswap undertale_au yaoi
anal anal_sex bed blue_eyes blue_sans_penis blue_sans_tongue blush bone brothers comic dialogue gay heart incest kissing lizheru_(artist) lying male meta_request papyrus_au penetration penis sans sans_au sans_blush sans_eye sans_glowing_eye sans_penis sans_tongue sitting skeleton sweat tears text tongue underswap undertale_au yaoi
1girls 5hitzzzu alternate_universe animated_skeleton big_breasts blue_body blue_eyes blue_sans_penis blue_sans_tongue blue_scarf blue_tongue boombita breasts cleavage clothing ectobody ectobreasts ectotongue eyelashes female female_only female_sans funcu funculicious genderswap meatcuteshii meta_request pinkbobatoo rule_63 sans sans_(underswap) sans_au sans_glowing_eye scarf simple_background skeleton skiddioop solid_color_background solo solo_female star_pupils stereodaddy tagme tongue tongue_out underswap underswap_sans undertale_au
1girls 5hitzzzu alternate_universe animated_skeleton big_breasts blue_body blue_eyes blue_sans_penis blue_sans_tongue blue_scarf blue_tongue boombita breasts cleavage clothing ectobody ectobreasts ectotongue eyelashes female female_only female_sans funcu funculicious genderswap meatcuteshii meta_request pinkbobatoo rule_63 sans sans_(underswap) sans_au sans_glowing_eye scarf simple_background skeleton skiddioop solid_color_background solo solo_female star_pupils stereodaddy tagme tongue tongue_out underswap underswap_sans undertale_au
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1girls alternate_universe blue_body blue_breasts blue_eyes blue_sans_penis blue_sans_tongue breasts buck_tooth ectobody ectobreasts ectopussy female_sans gloves grey_background meta_request no_bra no_panties rule_63 sans sans_(underswap) sans_au sans_glowing_eye scarf shirt_up skeleton star_eyes underswap underswap_sans underswap_sans_genderswap undertale_au wor_mspit
1girls alternate_universe blue_body blue_breasts blue_eyes blue_sans_penis blue_sans_tongue breasts buck_tooth ectobody ectobreasts ectopussy female_sans gloves grey_background meta_request no_bra no_panties rule_63 sans sans_(underswap) sans_au sans_glowing_eye scarf shirt_up skeleton star_eyes underswap underswap_sans underswap_sans_genderswap undertale_au wor_mspit
bed blue_eyes blue_sans_penis blue_sans_tongue blush bone closed_eyes comic dialogue gay heart implied_incest lizheru_(artist) male male_only masturbation meta_request orgasm papyrus_au penis sans sans_au sans_blush sans_eye sans_glowing_eye sans_penis sans_tongue sitting skeleton sweat text tongue undertale video_games
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2boys abstract_background anal anal_penetration anal_sex anus bara big_ass blue_eyes blue_nipples blue_sans_penis blue_sans_tongue blue_skin bottle cum cum_covered cum_on_arm cum_on_balls cum_on_breasts cum_on_fingers cum_on_head cum_on_penis cum_on_self cum_on_taint cum_on_thighs cum_trail disembodied_hand disembodied_penis drinking drunk erect gay glowing_eyes goo half-closed_eye huge_balls hyper_ass justmegabenewell male male/male male_focus male_only male_penetrating meta_request moobs naked nipples nude puffy_areolae puffy_nipples sans sans_blush sans_eye sans_glowing_eye sans_penis sans_tongue see-through skeleton spread_ass spreading_ass thick_penis thick_thighs undertale veiny_penis yaoi
1girls 2boys alternate_breast_size alternate_outfit anthro anthrofied being_watched big_breasts black_sclera black_shirt black_skirt black_thighhighs blue_eyes blue_sans_penis blue_sans_tongue breasts chelodoy cleavage deltarune dress feet female hair_over_eyes half-closed_eyes huge_ass huge_breasts human kneeling kris_(deltarune) larger_female male meta_request monster necklace on_knees purple_hair red_eyes sans sans_glowing_eye scalie shirt sitting size_difference skeleton skirt smaller_male source_request standing susie_(deltarune) text thick_thighs thighhighs undertale voyeur watermark white_skin wide_hips window yellow_sclera
1girls 2boys alternate_breast_size alternate_outfit anthro anthrofied being_watched big_breasts black_sclera black_shirt black_skirt black_thighhighs blue_eyes blue_sans_penis blue_sans_tongue breasts chelodoy cleavage deltarune dress feet female hair_over_eyes half-closed_eyes huge_ass huge_breasts human kneeling kris_(deltarune) larger_female male meta_request monster necklace on_knees purple_hair red_eyes sans sans_glowing_eye scalie shirt sitting size_difference skeleton skirt smaller_male source_request standing susie_(deltarune) text thick_thighs thighhighs undertale voyeur watermark white_skin wide_hips window yellow_sclera
age_difference ahe_gao animated_skeleton black_background blue_background blue_eyes blue_sans_penis blue_sans_tongue blue_tongue bondage bone clothed clothing drooling duo english english_text erection fangs flora_fauna flower flowey_the_flower fucked_silly glowing glowing_eye glowing_eyes hi_res humanoid_penis jacket looking_pleasured male male_only meta_request moan naughty_face nsfwchubbybunnie open_mouth orgasm penis plant restrained saliva saliva_string saliva_trail sans sans_blush sans_eye sans_glowing_eye sans_penis sans_tongue sex signature simple_background skeleton skull speech_bubble spikes sweat teeth tentacle tentaclejob text text_bubble tongue tongue_out undead undertale video_games vinejob vines yaoi
age_difference ahe_gao animated_skeleton black_background blue_background blue_eyes blue_sans_penis blue_sans_tongue blue_tongue bondage bone clothed clothing drooling duo english english_text erection fangs flora_fauna flower flowey_the_flower fucked_silly glowing glowing_eye glowing_eyes hi_res humanoid_penis jacket looking_pleasured male male_only meta_request moan naughty_face nsfwchubbybunnie open_mouth orgasm penis plant restrained saliva saliva_string saliva_trail sans sans_blush sans_eye sans_glowing_eye sans_penis sans_tongue sex signature simple_background skeleton skull speech_bubble spikes sweat teeth tentacle tentaclejob text text_bubble tongue tongue_out undead undertale video_games vinejob vines yaoi
2019 ambiguous_gender animated_skeleton blue_eyes blue_penis blue_sans_penis blue_sans_tongue blue_tongue bone clothing duo erection first_person_view genitals glowing glowing_eyes hi_res humanoid imminent_sex licking licking_lips licking_own_lips lightsaber_dick magnta male male/ambiguous male_focus male_only meta_request not_furry penis sans sans_blush sans_eye sans_glowing_eye sans_penis sans_tongue self_lick shirt skeleton solo_focus t-shirt taker_pov tongue tongue_out topwear undead undertale video_games white_clothing white_shirt white_topwear
2019 ambiguous_gender animated_skeleton blue_eyes blue_penis blue_sans_penis blue_sans_tongue blue_tongue bone clothing duo erection first_person_view genitals glowing glowing_eyes hi_res humanoid imminent_sex licking licking_lips licking_own_lips lightsaber_dick magnta male male/ambiguous male_focus male_only meta_request not_furry penis sans sans_blush sans_eye sans_glowing_eye sans_penis sans_tongue self_lick shirt skeleton solo_focus t-shirt taker_pov tongue tongue_out topwear undead undertale video_games white_clothing white_shirt white_topwear