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2d english english_text gay humor incest male male/male male_only meme papyrus papyrus_(underswap) sans text underswap underswap_sans undertale undertale_(series) yaoi
2d english english_text gay humor incest male male/male male_only meme papyrus papyrus_(underswap) sans text underswap underswap_sans undertale undertale_(series) yaoi
2d angry_vein blue_eyes christmas comic_sans dialogue english english_text incest papyrus papyrus_(font) papyrus_(underswap) papyrus_au sans sans_(underswap) sans_au talking text underswap underswap_papyrus underswap_sans undertale undertale_(series) undertale_au
2d angry_vein blue_eyes christmas comic_sans dialogue english english_text incest papyrus papyrus_(font) papyrus_(underswap) papyrus_au sans sans_(underswap) sans_au talking text underswap underswap_papyrus underswap_sans undertale undertale_(series) undertale_au
2boys boner_blossom bones_on_skin_(artist) fresh_sans gay male male/male male_only multi_tongue penetration sans sans_(underswap) sans_au sanscest sex sex_from_behind tagme tongue underfresh underswap underswap_sans undertale_au white_background yaoi
2boys boner_blossom bones_on_skin_(artist) fresh_sans gay male male/male male_only multi_tongue penetration sans sans_(underswap) sans_au sanscest sex sex_from_behind tagme tongue underfresh underswap underswap_sans undertale_au white_background yaoi
2boys 2d anal animated_skeleton blue_eyes blue_gloves dialog dialogue dominant_pov drool duo ectoplasm english english_text game gay gloves grabbing_leg grillby grillby_au leg_grab legs_spread male male_pov on_back open_mouth orange_body penetrating_pov penetration penetrator_pov penis pov sans sans_(underswap) sans_au shandrawaka skeleton solo_focus speech_bubble spread_legs star-shaped_pupils star_eyes star_shaped_pupils symbol-shaped_pupils talking tears text text_bubble undead underswap underswap_grillby underswap_sans undertale undertale_(series) undertale_au video_games yaoi
2boys 2d anal animated_skeleton blue_eyes blue_gloves dialog dialogue dominant_pov drool duo ectoplasm english english_text game gay gloves grabbing_leg grillby grillby_au leg_grab legs_spread male male_pov on_back open_mouth orange_body penetrating_pov penetration penetrator_pov penis pov sans sans_(underswap) sans_au shandrawaka skeleton solo_focus speech_bubble spread_legs star-shaped_pupils star_eyes star_shaped_pupils symbol-shaped_pupils talking tears text text_bubble undead underswap underswap_grillby underswap_sans undertale undertale_(series) undertale_au video_games yaoi
2boys 2d animated_skeleton blue_blush blue_gloves blue_tongue blush bottomless bowtie dialogue duo embarrassed english english_dialogue english_text fellatio gay glasses gloves grillby grillby_au male male/male male_only oral pink_bowtie sans sans_(underswap) sans_au shandrawaka simple_background skeleton speech_bubble spiral_eyes suck sucking sucking_penis talking text undead underswap underswap_grillby underswap_sans undertale undertale_(series) undertale_au white_background yaoi
2boys 2d animated_skeleton blue_blush blue_gloves blue_tongue blush bottomless bowtie dialogue duo embarrassed english english_dialogue english_text fellatio gay glasses gloves grillby grillby_au male male/male male_only oral pink_bowtie sans sans_(underswap) sans_au shandrawaka simple_background skeleton speech_bubble spiral_eyes suck sucking sucking_penis talking text undead underswap underswap_grillby underswap_sans undertale undertale_(series) undertale_au white_background yaoi
1boy 2d blush blush_lines chinese_text completely_nude completely_nude_male cum cum_on_floor embarrassed english_text fair_skin fire_elemental glasses grillby grillby_au kneeling large_penis male male_only naked nude open_mouth orange_skin pink_bowtie shandrawaka sitting solo solo_male spiral_eyes spiral_glasses text underswap underswap_grillby undertale undertale_(series) undertale_au white_background
1boy 2d blush blush_lines chinese_text completely_nude completely_nude_male cum cum_on_floor embarrassed english_text fair_skin fire_elemental glasses grillby grillby_au kneeling large_penis male male_only naked nude open_mouth orange_skin pink_bowtie shandrawaka sitting solo solo_male spiral_eyes spiral_glasses text underswap underswap_grillby undertale undertale_(series) undertale_au white_background
1girls 2d ass big_ass big_breasts big_butt breasts breasts_out butt female female_only female_sans headband looking_at_viewer panties pussy rule_63 sans sans_au solo thiccberry thick_thighs underswap underswap_genderswap underswap_sans underswap_sans_genderswap undertale undertale_(series) undertale_au
1girls 2d ass big_ass big_breasts big_butt breasts breasts_out butt female female_only female_sans headband looking_at_viewer panties pussy rule_63 sans sans_au solo thiccberry thick_thighs underswap underswap_genderswap underswap_sans underswap_sans_genderswap undertale undertale_(series) undertale_au
1girls 2d ass big_ass big_breasts big_butt blue_body blush breasts breasts_out butt ectobody ectobreasts female female_only grey_background panties rule_63 sans sans_au solo solo_female thiccberry thick_thighs underswap underswap_sans undertale undertale_(series) undertale_au
1girls 2d ass big_ass big_breasts big_butt blue_body blush breasts breasts_out butt ectobody ectobreasts female female_only grey_background panties rule_63 sans sans_au solo solo_female thiccberry thick_thighs underswap underswap_sans undertale undertale_(series) undertale_au
1boy 1girls 2d alternate_universe animated_skeleton blush cross_sans dialogue duo ectobody ectobreasts ectopussy english english_text heart heterochromia legs_held_open reverse_suspended_congress rule_63 sans sans_au sanscest simple_background skeleton spread_legs talking tears text themimii1 thick twitter_username underswap underswap_sans undertale undertale_(series) undertale_au vaginal_penetration xtale
1boy 1girls 2d alternate_universe animated_skeleton blush cross_sans dialogue duo ectobody ectobreasts ectopussy english english_text heart heterochromia legs_held_open reverse_suspended_congress rule_63 sans sans_au sanscest simple_background skeleton spread_legs talking tears text themimii1 thick twitter_username underswap underswap_sans undertale undertale_(series) undertale_au vaginal_penetration xtale
2023 alternate_universe alterswap alterswap_toriel altertale altertale_au anal anal_sex animated_skeleton anthro areola balls bandana barefoot black_areola blue_boots blue_clothing blue_cum blue_eyes blue_footwear blue_penis blush bodily_fluids bone boots boss_monster bottomless bovid caprine clitoris clothed clothing colored_cum cum cum_on_body cum_on_ground cum_splatter duo ectopenis ejaculation eye_contact feet female female_penetrated flat_chested footwear from_behind_position genital_fluids genitals gloves grey_clothing grey_shirt grey_topwear hand_on_leg hand_on_thigh hands_on_hips handwear hi_res humanoid kerchief leftyfornsfw long_ears looking_at_another male male/female male_penetrating mammal mouth_closed one_eye_closed open_mouth orgasm partially_clothed penetration penis red_eyes sans sans_(underswap) sans_au sex shirt signature skeleton smile smiling_at_each_other straight tongue tongue_out topwear toriel undead underswap undertale undertale_(series) undertale_au unusual_bodily_fluids unusual_cum unusual_genital_fluids vein veiny_balls wink
2023 alternate_universe alterswap alterswap_toriel altertale altertale_au anal anal_sex animated_skeleton anthro areola balls bandana barefoot black_areola blue_boots blue_clothing blue_cum blue_eyes blue_footwear blue_penis blush bodily_fluids bone boots boss_monster bottomless bovid caprine clitoris clothed clothing colored_cum cum cum_on_body cum_on_ground cum_splatter duo ectopenis ejaculation eye_contact feet female female_penetrated flat_chested footwear from_behind_position genital_fluids genitals gloves grey_clothing grey_shirt grey_topwear hand_on_leg hand_on_thigh hands_on_hips handwear hi_res humanoid kerchief leftyfornsfw long_ears looking_at_another male male/female male_penetrating mammal mouth_closed one_eye_closed open_mouth orgasm partially_clothed penetration penis red_eyes sans sans_(underswap) sans_au sex shirt signature skeleton smile smiling_at_each_other straight tongue tongue_out topwear toriel undead underswap undertale undertale_(series) undertale_au unusual_bodily_fluids unusual_cum unusual_genital_fluids vein veiny_balls wink
1boy 1boy1girl 1girls 2d chara covered_nipples cum cum_in_pussy cum_inside eosftwit eye_symbol heart-shaped_pupils pasties rule_63 sex tagme transparent_body underswap underswap_sans undertale undertale_(series) undertale_au vaginal_penetration
1boy 1boy1girl 1girls 2d chara covered_nipples cum cum_in_pussy cum_inside eosftwit eye_symbol heart-shaped_pupils pasties rule_63 sex tagme transparent_body underswap underswap_sans undertale undertale_(series) undertale_au vaginal_penetration
1boy 1boy1girl 1girls 2d chara covered_nipples eosftwit eye_symbol pasties rule_63 sex tagme transparent_body underswap underswap_sans undertale undertale_(series) undertale_au
1boy 1boy1girl 1girls 2d chara covered_nipples eosftwit eye_symbol pasties rule_63 sex tagme transparent_body underswap underswap_sans undertale undertale_(series) undertale_au
2d alternate_universe animated_skeleton begging breasts cross_sans dialogue ectobody ectobreasts ectobutt ectopussy edging english english_dialogue english_text female femsub heart implied_cheating punishment pussy rule_63 sans sans_au sanscest sex_toy skeleton talking text themimii1 thick underswap underswap_sans undertale undertale_(series) undertale_au xtale
2d alternate_universe animated_skeleton begging breasts cross_sans dialogue ectobody ectobreasts ectobutt ectopussy edging english english_dialogue english_text female femsub heart implied_cheating punishment pussy rule_63 sans sans_au sanscest sex_toy skeleton talking text themimii1 thick underswap underswap_sans undertale undertale_(series) undertale_au xtale
2d alternate_universe ambiguous_penetration animated_skeleton blush cross_sans dialogue ectobody english english_dialogue english_text femsub heart heart-shaped_pupils heterochromia large_breasts moan rule_63 sans sans_au sanscest sex skeleton talking text themimii1 thick thrusting underswap underswap_sans undertale undertale_(series) undertale_au xtale
2d alternate_universe ambiguous_penetration animated_skeleton blush cross_sans dialogue ectobody english english_dialogue english_text femsub heart heart-shaped_pupils heterochromia large_breasts moan rule_63 sans sans_au sanscest sex skeleton talking text themimii1 thick thrusting underswap underswap_sans undertale undertale_(series) undertale_au xtale
2d alternate_universe animated_skeleton blue_eyes cross_sans cross_sans_(fan_character) dialogue dream_sans_(fan_character) ectobody ectobreasts heart ink_sans_(fan_character) inktale male_penetrating_female rule_63 sans sans_au sanscest simple_background skeleton tagme themimii1 thick twitter_username underswap underswap_sans undertale undertale_(series) undertale_au yellow_eyes
2d alternate_universe animated_skeleton blue_eyes cross_sans cross_sans_(fan_character) dialogue dream_sans_(fan_character) ectobody ectobreasts heart ink_sans_(fan_character) inktale male_penetrating_female rule_63 sans sans_au sanscest simple_background skeleton tagme themimii1 thick twitter_username underswap underswap_sans undertale undertale_(series) undertale_au yellow_eyes
2d 2d_(artwork) after_sex after_vaginal ahe_gao alternate_universe animated_skeleton cum cum_in_pussy cum_inside ectobody ectopussy female grabbing_sheets hetero kriskimarts leaking_cum leaking_pussy male/female on_bed pink_body pink_pussy pussy rule_63 sans sans_au sanscest skeleton straight torn_clothes torn_clothing underlust underlust_sans underswap underswap_sans undertale undertale_(series) undertale_au
2d 2d_(artwork) after_sex after_vaginal ahe_gao alternate_universe animated_skeleton cum cum_in_pussy cum_inside ectobody ectopussy female grabbing_sheets hetero kriskimarts leaking_cum leaking_pussy male/female on_bed pink_body pink_pussy pussy rule_63 sans sans_au sanscest skeleton straight torn_clothes torn_clothing underlust underlust_sans underswap underswap_sans undertale undertale_(series) undertale_au
2boys 2d alternate_universe animated_skeleton artist_request big_penis blue_eyes blue_tongue disembodied_penis dream_sans dream_sans_(fan_character) dreamtale dreamtale_(undertale_fanfiction) ectopenis ectotongue gay huge_penis male_only pink_background sans sans_au sanscest sex simple_background skeleton solid_color_background solo_focus underswap underswap_sans undertale undertale_(series) undertale_au yaoi yellow_eyes yellow_penis
2boys 2d alternate_universe animated_skeleton artist_request big_penis blue_eyes blue_tongue disembodied_penis dream_sans dream_sans_(fan_character) dreamtale dreamtale_(undertale_fanfiction) ectopenis ectotongue gay huge_penis male_only pink_background sans sans_au sanscest sex simple_background skeleton solid_color_background solo_focus underswap underswap_sans undertale undertale_(series) undertale_au yaoi yellow_eyes yellow_penis
2d 2girls big_breasts blue_body blue_breasts blue_eyes blueberry breasts chara ectobody ectobreasts ectoplasm exaggerated_eyelashes female_only female_sans multiple_girls offering_to_viewer red_eyes sans sans_au tagme the_absolute underswap underswap_sans undertale undertale_(series) undertale_au white_background
2d 2girls big_breasts blue_body blue_breasts blue_eyes blueberry breasts chara ectobody ectobreasts ectoplasm exaggerated_eyelashes female_only female_sans multiple_girls offering_to_viewer red_eyes sans sans_au tagme the_absolute underswap underswap_sans undertale undertale_(series) undertale_au white_background
alternate_universe animated_skeleton anthro blue_body blue_eyes blue_scarf blush breasts ectobody ectobreasts female_sans looking_away rule_63 sans sans_(underswap) sans_au scarf skeleton solo solo_female transparent_background underswap underswap_sans undertale_au unknown_artist
alternate_universe animated_skeleton anthro blue_body blue_eyes blue_scarf blush breasts ectobody ectobreasts female_sans looking_away rule_63 sans sans_(underswap) sans_au scarf skeleton solo solo_female transparent_background underswap underswap_sans undertale_au unknown_artist
1girls 2d female rule_63 sans sans_au solo tagme underswap underswap_genderswap underswap_sans underswap_sans_genderswap undertale undertale_(series) undertale_au uttsans_(artist)
1girls 2d female rule_63 sans sans_au solo tagme underswap underswap_genderswap underswap_sans underswap_sans_genderswap undertale undertale_(series) undertale_au uttsans_(artist)
1girls 2d breasts ectobody ectobreasts female rule_63 sans sans_au solo tagme underswap underswap_genderswap underswap_sans underswap_sans_genderswap undertale undertale_(series) undertale_au uttsans_(artist)
1girls 2d breasts ectobody ectobreasts female rule_63 sans sans_au solo tagme underswap underswap_genderswap underswap_sans underswap_sans_genderswap undertale undertale_(series) undertale_au uttsans_(artist)
1girls 2d breasts ectobody ectobreasts female female_sans rule_63 sans sans_au solo tagme underswap underswap_genderswap underswap_sans underswap_sans_genderswap undertale undertale_(series) undertale_au uttsans_(artist)
1girls 2d breasts ectobody ectobreasts female female_sans rule_63 sans sans_au solo tagme underswap underswap_genderswap underswap_sans underswap_sans_genderswap undertale undertale_(series) undertale_au uttsans_(artist)
bulge bulge_in_pants bulge_through_clothing confused confused_look fell_down flustered flustered_male glowing gradient_background grey_background on_floor sans sans_au simple_background skeleton underswap underswap_sans undertale_au
bulge bulge_in_pants bulge_through_clothing confused confused_look fell_down flustered flustered_male glowing gradient_background grey_background on_floor sans sans_au simple_background skeleton underswap underswap_sans undertale_au
2d amazeing666 breasts ectoplasm fan_character female genderswap genderswap_(mtf) mel_(amazeing666) oc original_character rule_63 sans sans_au skeleton tagme tar_creature underswap underswap_sans undertale undertale_(series) undertale_au
2d amazeing666 breasts ectoplasm fan_character female genderswap genderswap_(mtf) mel_(amazeing666) oc original_character rule_63 sans sans_au skeleton tagme tar_creature underswap underswap_sans undertale undertale_(series) undertale_au
1girls 2d female female_sans genderbend rule_63 sans sans_au solo underswap underswap_genderswap underswap_sans underswap_sans_genderswap undertale undertale_(series) undertale_au uttsans_(artist)
1girls 2d female female_sans genderbend rule_63 sans sans_au solo underswap underswap_genderswap underswap_sans underswap_sans_genderswap undertale undertale_(series) undertale_au uttsans_(artist)
1girls 2d big_thighs breasts dusttrust dusttrust_sans ectobody female female_only female_sans genderswap genderswap_(mtf) gradient_background hand_on_hip holding_weapon red_eyes ripped_clothing rule_63 sans sans_au solo solo_female sword underswap underswap_genderswap underswap_sans underswap_sans_genderswap undertale undertale_(series) undertale_au uttsans_(artist) weapon
1girls 2d big_thighs breasts dusttrust dusttrust_sans ectobody female female_only female_sans genderswap genderswap_(mtf) gradient_background hand_on_hip holding_weapon red_eyes ripped_clothing rule_63 sans sans_au solo solo_female sword underswap underswap_genderswap underswap_sans underswap_sans_genderswap undertale undertale_(series) undertale_au uttsans_(artist) weapon
1girls 2d big_breasts blue_body breasts ectobody female female_only female_sans genderswap genderswap_(mtf) rule_63 sans sans_au solo solo_female thighs underswap underswap_genderswap underswap_sans underswap_sans_genderswap undertale undertale_(series) undertale_au uttsans_(artist)
1girls 2d big_breasts blue_body breasts ectobody female female_only female_sans genderswap genderswap_(mtf) rule_63 sans sans_au solo solo_female thighs underswap underswap_genderswap underswap_sans underswap_sans_genderswap undertale undertale_(series) undertale_au uttsans_(artist)
peace_sign rule63 sans underswap uttsans_(artist)
peace_sign rule63 sans underswap uttsans_(artist)
breasts female_sans rule_63 sans sans_au the_absolute thighhighs thighs underswap underswap_genderswap underswap_sans underswap_sans_genderswap undertale_au
breasts female_sans rule_63 sans sans_au the_absolute thighhighs thighs underswap underswap_genderswap underswap_sans underswap_sans_genderswap undertale_au
1boy 1girls ass big_ass big_breasts big_butt blue_blush blue_body blue_eyes blue_nipples blue_tongue boobjob breasts butt chubby chubby_female clothed_paizuri clothed_sex cum cum_on_breasts cum_through_clothes cumshot ectobody ectobreasts ectotongue ejaculation ejaculation_between_breasts extended_arms female female_sans fondling hat heart-shaped_pupils humanoid_penis jean_shorts male/female mellednsfw midriff napstablook napstaton nipple_bulge nipples nipples_visible_through_clothing paizuri paizuri_under_clothes pinching_nipples precum precum_through_clothing robot robot_humanoid robotic_arm rule_63 sans sans_au sanstablook scarf short_shorts shorts skeleton small_top tagme titfuck titfuck_under_clothes tongue_out topwear underswap underswap_sans undertale_(series) undertale_au undertale_fanfiction wet_pussy
1boy 1girls ass big_ass big_breasts big_butt blue_blush blue_body blue_eyes blue_nipples blue_tongue boobjob breasts butt chubby chubby_female clothed_paizuri clothed_sex cum cum_on_breasts cum_through_clothes cumshot ectobody ectobreasts ectotongue ejaculation ejaculation_between_breasts extended_arms female female_sans fondling hat heart-shaped_pupils humanoid_penis jean_shorts male/female mellednsfw midriff napstablook napstaton nipple_bulge nipples nipples_visible_through_clothing paizuri paizuri_under_clothes pinching_nipples precum precum_through_clothing robot robot_humanoid robotic_arm rule_63 sans sans_au sanstablook scarf short_shorts shorts skeleton small_top tagme titfuck titfuck_under_clothes tongue_out topwear underswap underswap_sans undertale_(series) undertale_au undertale_fanfiction wet_pussy
2boys 2d blue_blush blue_eyes blue_tongue blush blushing_profusely cum gay incest long_tongue male male/male male_focus male_only orange_penis papyrus sans sans_au scarf skeleton tagme underswap underswap_papyrus underswap_sans undertale undertale_(series) undertale_au undertale_fanfiction
2boys 2d blue_blush blue_eyes blue_tongue blush blushing_profusely cum gay incest long_tongue male male/male male_focus male_only orange_penis papyrus sans sans_au scarf skeleton tagme underswap underswap_papyrus underswap_sans undertale undertale_(series) undertale_au undertale_fanfiction
2022 alternate_universe animal_humanoid balls bangs big_breasts blue_body blue_skin blush bodily_fluids breast_play breast_squeeze breasts cum cum_on_breasts duo ear_fins eyewear female fin fish fish_humanoid fish_tail frisk genital_fluids genitals glasses green_background hair hand_on_breast hi_res huge_breasts human humanoid hyper hyper_breasts lactating lactation long_hair male mammal marine marine_humanoid milk navel nipples open_mouth paizuri penis pupils rb34 red_hair sex sharp_teeth shy simple_background slit_pupils tail teeth titjob toby_fox underswap undertale undertale_(series) undertale_au undertale_fanfiction undyne video_games yellow_body yellow_sclera yellow_teeth
2022 alternate_universe animal_humanoid balls bangs big_breasts blue_body blue_skin blush bodily_fluids breast_play breast_squeeze breasts cum cum_on_breasts duo ear_fins eyewear female fin fish fish_humanoid fish_tail frisk genital_fluids genitals glasses green_background hair hand_on_breast hi_res huge_breasts human humanoid hyper hyper_breasts lactating lactation long_hair male mammal marine marine_humanoid milk navel nipples open_mouth paizuri penis pupils rb34 red_hair sex sharp_teeth shy simple_background slit_pupils tail teeth titjob toby_fox underswap undertale undertale_(series) undertale_au undertale_fanfiction undyne video_games yellow_body yellow_sclera yellow_teeth
ass blue_body blue_skin breasts butt cape ectobody looking_at_viewer looking_back outdoors outside ribbon rule_63 sans sans_au simple_background simple_coloring simple_shading sitting smile smiling smiling_at_viewer snow snowing tagme thigh_highs thighhighs underswap underswap_genderswap underswap_sans underswap_sans_genderswap undertale_au
ass blue_body blue_skin breasts butt cape ectobody looking_at_viewer looking_back outdoors outside ribbon rule_63 sans sans_au simple_background simple_coloring simple_shading sitting smile smiling smiling_at_viewer snow snowing tagme thigh_highs thighhighs underswap underswap_genderswap underswap_sans underswap_sans_genderswap undertale_au
1girls alternate_universe animated_skeleton breasts cape ectobody ectobreasts ectopenis ectopussy female female_only female_sans gloves hand_on_hip looking_at_viewer nipples pose posible pussy ribbon rule_63 sans sans_au simple_background simple_coloring simple_shading skeleton smile smiling_at_viewer star_eyes stars tagme thigh_highs thighhighs underswap underswap_genderswap underswap_sans underswap_sans_genderswap undertale undertale_(series) undertale_au
1girls alternate_universe animated_skeleton breasts cape ectobody ectobreasts ectopenis ectopussy female female_only female_sans gloves hand_on_hip looking_at_viewer nipples pose posible pussy ribbon rule_63 sans sans_au simple_background simple_coloring simple_shading skeleton smile smiling_at_viewer star_eyes stars tagme thigh_highs thighhighs underswap underswap_genderswap underswap_sans underswap_sans_genderswap undertale undertale_(series) undertale_au
fully_clothed gay gloves incest male male_only moan moaning naked non-human nude papyrus papyrus_au pleading reignbeaux sans sans_au scarf skeleton tagme tail underfell underfell_papyrus underswap underswap_sans undertale undertale_(series) undertale_au
fully_clothed gay gloves incest male male_only moan moaning naked non-human nude papyrus papyrus_au pleading reignbeaux sans sans_au scarf skeleton tagme tail underfell underfell_papyrus underswap underswap_sans undertale undertale_(series) undertale_au
2d 6boys abosinsin alternate_universe animated_skeleton big_penis black_background blowjob blowjob_pov blue_tongue brothers dark_background dominant_pov ectopenis ectoplasm fellatio gay grabbing_head grabbing_penis heart-shaped_pupils incest licking licking_penis male male_only male_pov oral orange_penis papyrus papyrus_(underfell) papyrus_(underswap) papyrus_au penis pov red_penis sans sans_(underfell) sans_(underswap) sans_au skeleton sucking_penis tongue_on_penis underfell underswap underswap_sans undertale undertale_(series) undertale_au
2d 6boys abosinsin alternate_universe animated_skeleton big_penis black_background blowjob blowjob_pov blue_tongue brothers dark_background dominant_pov ectopenis ectoplasm fellatio gay grabbing_head grabbing_penis heart-shaped_pupils incest licking licking_penis male male_only male_pov oral orange_penis papyrus papyrus_(underfell) papyrus_(underswap) papyrus_au penis pov red_penis sans sans_(underfell) sans_(underswap) sans_au skeleton sucking_penis tongue_on_penis underfell underswap underswap_sans undertale undertale_(series) undertale_au