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papyrus (underswap)

absurd_res alligator alligatorid alphys alphys_(underswap) ambiguous_gender anthro arachnid armor arthropod asgore_(underswap) asgore_dreemurr asriel_dreemurr big_penis bone boss_monster_(undertale) bratty_(undertale) canid canine carol_holiday cast catty_(undertale) clothing crocodile crocodilian crocodylid deer deltarune dess_holiday digital_media_(artwork) dracozhilla dummy_(undertale) felid female femboy fire fish gaster genitals ghost grillby grillby_(underswap) group happstablook hi_res humanoid larger_female larger_male lingerie machine mad_mew_mew male mammal marine mettaton mew_mew_(undertale) mew_mew_kissy_cutie milffet muffet muffet_(underswap) napstablook napstabot new_world_deer overweight papyrus papyrus_(underswap) penis pixel_(artwork) reindeer reptile river_person_(undertale) robot robot_humanoid sans_(disambiguation) sans_(underswap) scalie scared_donut_guy short shyren size_difference skeleton skinny small_penis spider spirit swimwear tall toriel toriel_(underswap) training_dummy underswap underswap_toriel undertale undertale_(series) undyne undyne_(underswap) wrestling_outfit
absurd_res alligator alligatorid alphys alphys_(underswap) ambiguous_gender anthro arachnid armor arthropod asgore_(underswap) asgore_dreemurr asriel_dreemurr big_penis bone boss_monster_(undertale) bratty_(undertale) canid canine carol_holiday cast catty_(undertale) clothing crocodile crocodilian crocodylid deer deltarune dess_holiday digital_media_(artwork) dracozhilla dummy_(undertale) felid female femboy fire fish gaster genitals ghost grillby grillby_(underswap) group happstablook hi_res humanoid larger_female larger_male lingerie machine mad_mew_mew male mammal marine mettaton mew_mew_(undertale) mew_mew_kissy_cutie milffet muffet muffet_(underswap) napstablook napstabot new_world_deer overweight papyrus papyrus_(underswap) penis pixel_(artwork) reindeer reptile river_person_(undertale) robot robot_humanoid sans_(disambiguation) sans_(underswap) scalie scared_donut_guy short shyren size_difference skeleton skinny small_penis spider spirit swimwear tall toriel toriel_(underswap) training_dummy underswap underswap_toriel undertale undertale_(series) undyne undyne_(underswap) wrestling_outfit
1boy 2d anthro ectopenis exhibition exhibitionism exhibitionist humanoid male male_only masturbating masturbation monster monster_boy monster_cock mutual_masturbation nekromeowncer papyrus papyrus_(underswap) papyrus_au pov pov_eye_contact skeleton solo solo_male underswap underswap_papyrus undertale undertale_(series) undertale_au
1boy 2d anthro ectopenis exhibition exhibitionism exhibitionist humanoid male male_only masturbating masturbation monster monster_boy monster_cock mutual_masturbation nekromeowncer papyrus papyrus_(underswap) papyrus_au pov pov_eye_contact skeleton solo solo_male underswap underswap_papyrus undertale undertale_(series) undertale_au
2boys 2d animated animated_gif blowjob ectobody ectopenis fellatio gay gloves humanoid incest looping_animation male male_only offscreen_character offscreen_male oral orange_penis papyrus papyrus_(underswap) papyrus_au penis_vein pov saliva saliva_on_penis sans sans_(underswap) sans_au scarf sex tagme tears underswap underswap_papyrus underswap_sans undertale undertale_(series) undertale_au wor_mspit yaoi
2boys 2d animated animated_gif blowjob ectobody ectopenis fellatio gay gloves humanoid incest looping_animation male male_only offscreen_character offscreen_male oral orange_penis papyrus papyrus_(underswap) papyrus_au penis_vein pov saliva saliva_on_penis sans sans_(underswap) sans_au scarf sex tagme tears underswap underswap_papyrus underswap_sans undertale undertale_(series) undertale_au wor_mspit yaoi
anal anal_penetration anal_sex digital_drawing_(artwork) digital_media_(artwork) gay incest male male/male male_only male_penetrating male_penetrating_male papyrus papyrus_(underswap) papyrus_au sans sans_(underfell) sans_au tagme undertale undertale_(series) undertale_au yaoi
anal anal_penetration anal_sex digital_drawing_(artwork) digital_media_(artwork) gay incest male male/male male_only male_penetrating male_penetrating_male papyrus papyrus_(underswap) papyrus_au sans sans_(underfell) sans_au tagme undertale undertale_(series) undertale_au yaoi
alternate_universe animated_skeleton beoteono ectopenis ectopussy male male_only non-human papyrus_(underswap) papyrus_au penetration sans sans_(underswap) skeleton toony undead underswap undertale_au yaoi
alternate_universe animated_skeleton beoteono ectopenis ectopussy male male_only non-human papyrus_(underswap) papyrus_au penetration sans sans_(underswap) skeleton toony undead underswap undertale_au yaoi
alternate_universe animated_skeleton beoteono blowjob ectopenis male male_only non-human papyrus_(underswap) papyrus_au sans sans_(underswap) skeleton toony undead underswap undertale_au yaoi
alternate_universe animated_skeleton beoteono blowjob ectopenis male male_only non-human papyrus_(underswap) papyrus_au sans sans_(underswap) skeleton toony undead underswap undertale_au yaoi
alternate_universe animated_skeleton beoteono cum cum_on_penis drooling ectopenis male_only non-human papyrus_(underswap) papyrus_au skeleton toony undead underswap undertale_au
alternate_universe animated_skeleton beoteono cum cum_on_penis drooling ectopenis male_only non-human papyrus_(underswap) papyrus_au skeleton toony undead underswap undertale_au
2boys 2d alternate_universe animated_skeleton bondage comic comic_page comic_panel cum cum_on_penis drooling ectopenis english_text forced gagged humanoid ksuriuri male male_only non-human papyrus_(underfell) papyrus_(underswap) papyrus_au skeleton talking text toony undead underfell underswap undertale_(series) undertale_au yaoi
2boys 2d alternate_universe animated_skeleton bondage comic comic_page comic_panel cum cum_on_penis drooling ectopenis english_text forced gagged humanoid ksuriuri male male_only non-human papyrus_(underfell) papyrus_(underswap) papyrus_au skeleton talking text toony undead underfell underswap undertale_(series) undertale_au yaoi
2d 4boys alternate_universe anal animated_skeleton bondage comic comic_page comic_panel crying cum cum_in_ass cum_inside drooling dubcon ectobody ectobutt ectopenis english_text forced gagged humanoid incest ksuriuri male male_only masturbating_while_penetrated non-human papyrus_(underswap) papyrus_au precum red_body sans sans_(underfell) sans_(underswap) sans_au sex skeleton talking text toony undead underfell underswap undertale_(series) undertale_au yaoi
2d 4boys alternate_universe anal animated_skeleton bondage comic comic_page comic_panel crying cum cum_in_ass cum_inside drooling dubcon ectobody ectobutt ectopenis english_text forced gagged humanoid incest ksuriuri male male_only masturbating_while_penetrated non-human papyrus_(underswap) papyrus_au precum red_body sans sans_(underfell) sans_(underswap) sans_au sex skeleton talking text toony undead underfell underswap undertale_(series) undertale_au yaoi
2d 3boys alternate_universe anal animated_skeleton bondage comic comic_page comic_panel cringe crying drooling dubcon ectopenis english_text forced gagged humanoid incest ksuriuri male male_only masturbating_while_penetrated non-human papyrus_(underswap) papyrus_au power_bottom precum sans sans_(underfell) sans_(underswap) sans_au sex skeleton talking text toony undead underfell underswap undertale_(series) undertale_au yaoi
2d 3boys alternate_universe anal animated_skeleton bondage comic comic_page comic_panel cringe crying drooling dubcon ectopenis english_text forced gagged humanoid incest ksuriuri male male_only masturbating_while_penetrated non-human papyrus_(underswap) papyrus_au power_bottom precum sans sans_(underfell) sans_(underswap) sans_au sex skeleton talking text toony undead underfell underswap undertale_(series) undertale_au yaoi
2boys 2d alternate_universe anal animated_skeleton blowjob bondage comic comic_page comic_panel drooling dubcon ectobody ectobutt ectopenis english_text forced gagged humanoid incest ksuriuri male male_only orange_penis papyrus_(underswap) papyrus_au power_bottom precum red_ass red_body red_butt sans sans_(underfell) sans_au sex skeleton talking text undead underfell underswap undertale_(series) undertale_au unzipped_pants yaoi
2boys 2d alternate_universe anal animated_skeleton blowjob bondage comic comic_page comic_panel drooling dubcon ectobody ectobutt ectopenis english_text forced gagged humanoid incest ksuriuri male male_only orange_penis papyrus_(underswap) papyrus_au power_bottom precum red_ass red_body red_butt sans sans_(underfell) sans_au sex skeleton talking text undead underfell underswap undertale_(series) undertale_au unzipped_pants yaoi
2boys 2d alternate_universe animated_skeleton bondage comic comic_page comic_panel drooling dubcon ectopenis english_text forced gagged humanoid imminent_sex incest ksuriuri male male_only orange_penis papyrus_(underswap) papyrus_au precum sans sans_(underfell) sans_au skeleton talking text undead underfell underswap undertale_(series) undertale_au unzipped_pants yaoi
2boys 2d alternate_universe animated_skeleton bondage comic comic_page comic_panel drooling dubcon ectopenis english_text forced gagged humanoid imminent_sex incest ksuriuri male male_only orange_penis papyrus_(underswap) papyrus_au precum sans sans_(underfell) sans_au skeleton talking text undead underfell underswap undertale_(series) undertale_au unzipped_pants yaoi
2boys 2d alternate_universe animated_skeleton blowjob bondage comic comic_page comic_panel cum cum_in_pants english_text erection erection_under_clothes forced humanoid incest ksuriuri licking_penis male male_only papyrus_(underswap) papyrus_au sans sans_(underfell) sans_au skeleton text undead underfell underswap undertale_(series) undertale_au yaoi
2boys 2d alternate_universe animated_skeleton blowjob bondage comic comic_page comic_panel cum cum_in_pants english_text erection erection_under_clothes forced humanoid incest ksuriuri licking_penis male male_only papyrus_(underswap) papyrus_au sans sans_(underfell) sans_au skeleton text undead underfell underswap undertale_(series) undertale_au yaoi
blue_eyes blue_tongue bonetrouble cum cum_on_face cum_on_tongue ectopenis grabbing_head head_grab holding_head incest papyrus_(underswap) papyrus_au sans sans_au scarf skeleton tagme tongue tongue_out underswap underswap_papyrus underswap_sans undertale_au
blue_eyes blue_tongue bonetrouble cum cum_on_face cum_on_tongue ectopenis grabbing_head head_grab holding_head incest papyrus_(underswap) papyrus_au sans sans_au scarf skeleton tagme tongue tongue_out underswap underswap_papyrus underswap_sans undertale_au
!! 2d acidd_grrs alternate_universe animated_skeleton artist_name blue_body blue_breasts blush brother_and_sister chubby chubby_female closed_eyes color ectobody ectobreasts exclamation_point female genderswap_(mtf) half-dressed heart hetero incest male male/female male_penetrating orange_body orange_hoodie pants_down papyrus_(underswap) papyrus_au rule_63 sans simple_background skeleton straight taller_male uncensored underswap underswap_papyrus undertale undertale_(series) undertale_au white_background
!! 2d acidd_grrs alternate_universe animated_skeleton artist_name blue_body blue_breasts blush brother_and_sister chubby chubby_female closed_eyes color ectobody ectobreasts exclamation_point female genderswap_(mtf) half-dressed heart hetero incest male male/female male_penetrating orange_body orange_hoodie pants_down papyrus_(underswap) papyrus_au rule_63 sans simple_background skeleton straight taller_male uncensored underswap underswap_papyrus undertale undertale_(series) undertale_au white_background
animated_skeleton blush bodily_fluids bone bottomwear cigarette cigarette_in_mouth clothed clothing english_text erection genital_fluids genitals gesture heart hi_res hoodie looking_at_viewer male male_only object_in_mouth open_bottomwear open_clothing open_pants orange_penis orange_tongue pants papyrus papyrus_(underswap) papyrus_au penis penis_out penis_through_fly poking_out precum precum_bead selfie skeleton solo solo_male text theyaois_(artist) tongue tongue_out topwear undead underswap undertale_au v_sign
animated_skeleton blush bodily_fluids bone bottomwear cigarette cigarette_in_mouth clothed clothing english_text erection genital_fluids genitals gesture heart hi_res hoodie looking_at_viewer male male_only object_in_mouth open_bottomwear open_clothing open_pants orange_penis orange_tongue pants papyrus papyrus_(underswap) papyrus_au penis penis_out penis_through_fly poking_out precum precum_bead selfie skeleton solo solo_male text theyaois_(artist) tongue tongue_out topwear undead underswap undertale_au v_sign
2018 2d 3boys alternate_universe animated_skeleton blue_penis blush bodily_fluids bone bottomwear brother brothers clothing color cunnilingus cuntboy cuntboy_sans_balls footwear gay genital_fluids genitals gloves group handwear herm hermaphrodite humanoid incest intersex kerchief licking male male/male male_on_maleherm maleherm multi_genitalia oral orange_tongue papyrus papyrus_(underfell) papyrus_(underswap) penile penis penis_lick precum pussy red_penis sans sans_(underswap) scarf sex sibling simple_background skeleton theyaois_(artist) threesome tongue tongue_out topwear trio uncensored undead underfell underswap undertale undertale_(series) undertale_au yaoi
2018 2d 3boys alternate_universe animated_skeleton blue_penis blush bodily_fluids bone bottomwear brother brothers clothing color cunnilingus cuntboy cuntboy_sans_balls footwear gay genital_fluids genitals gloves group handwear herm hermaphrodite humanoid incest intersex kerchief licking male male/male male_on_maleherm maleherm multi_genitalia oral orange_tongue papyrus papyrus_(underfell) papyrus_(underswap) penile penis penis_lick precum pussy red_penis sans sans_(underswap) scarf sex sibling simple_background skeleton theyaois_(artist) threesome tongue tongue_out topwear trio uncensored undead underfell underswap undertale undertale_(series) undertale_au yaoi
2boys 2d abosinsin alternate_universe animated_skeleton big_dom_small_sub blush color gay gripping_sheets incest male male_only moaning monster monster_boy papyrus papyrus_(underswap) papyrus_au sans sans_(underswap) sans_au sex size_difference skeleton solo_focus sweat tagme tongue_out underswap underswap_papyrus underswap_sans undertale undertale_(series) undertale_au unseen_male_face
2boys 2d abosinsin alternate_universe animated_skeleton big_dom_small_sub blush color gay gripping_sheets incest male male_only moaning monster monster_boy papyrus papyrus_(underswap) papyrus_au sans sans_(underswap) sans_au sex size_difference skeleton solo_focus sweat tagme tongue_out underswap underswap_papyrus underswap_sans undertale undertale_(series) undertale_au unseen_male_face
2d anal_beads blush dildo dildo_in_pussy dildo_penetration dildo_riding ectobody english_text hoodie implied_incest incest masturbating_while_watching offscreen_masturbation papyrus_(underswap) papyrus_au riding_dildo rule_63 sans sans_(underswap) sans_au scarf sex_toy skeleton stockings straight tagme tentacle_dildo text trembling underswap underswap_papyrus underswap_sans undertale_(series) undertale_au undertale_fanfiction vaginal_penetration watching wor_mspit
2d anal_beads blush dildo dildo_in_pussy dildo_penetration dildo_riding ectobody english_text hoodie implied_incest incest masturbating_while_watching offscreen_masturbation papyrus_(underswap) papyrus_au riding_dildo rule_63 sans sans_(underswap) sans_au scarf sex_toy skeleton stockings straight tagme tentacle_dildo text trembling underswap underswap_papyrus underswap_sans undertale_(series) undertale_au undertale_fanfiction vaginal_penetration watching wor_mspit
2d animated_skeleton boy_rape color cuntboy dialogue ectopussy english english_dialogue english_text flowey_(undertale) flowey_the_flower ganzooky intersex orange_hoodie papyrus papyrus_(underswap) papyrus_au plant rape rape_face restrained talking tentacle text underswap underswap_papyrus undertale undertale_(series) undertale_au vines
2d animated_skeleton boy_rape color cuntboy dialogue ectopussy english english_dialogue english_text flowey_(undertale) flowey_the_flower ganzooky intersex orange_hoodie papyrus papyrus_(underswap) papyrus_au plant rape rape_face restrained talking tentacle text underswap underswap_papyrus undertale undertale_(series) undertale_au vines
2boys 2d english english_text humor male male_only meme papyrus papyrus_(underswap) sans tagme text underswap undertale undertale_(series)
2boys 2d english english_text humor male male_only meme papyrus papyrus_(underswap) sans tagme text underswap undertale undertale_(series)
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
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
1boy 2d artist_request big_belly cum cumflation english_text incest inflation male male_only papyrus_(underswap) papyrus_au sans sans_au solo solo_male tagme talking text underswap underswap_papyrus underswap_sans undertale undertale_(series) undertale_au
1boy 2d artist_request big_belly cum cumflation english_text incest inflation male male_only papyrus_(underswap) papyrus_au sans sans_au solo solo_male tagme talking text underswap underswap_papyrus underswap_sans undertale undertale_(series) undertale_au
2010s 2016 2boys 2d alternate_universe animated_skeleton arms_up artist_name blue_penis bottomless chinese_text clothed_rape crying disembodied_penis ectopenis english_text heki_(artist) humanoid imminent_rape imminent_sex incest legs_apart legs_spread legs_up male male/male male_only orange_penis papyrus papyrus_(underswap) papyrus_au penis rape sans sans_(underswap) sans_au skeleton solo_focus spread_legs star_eyes star_shaped_pupils sweatdrop talking tears text underswap underswap_papyrus underswap_sans undertale_(series) undertale_au undertale_fanfiction yaoi
2010s 2016 2boys 2d alternate_universe animated_skeleton arms_up artist_name blue_penis bottomless chinese_text clothed_rape crying disembodied_penis ectopenis english_text heki_(artist) humanoid imminent_rape imminent_sex incest legs_apart legs_spread legs_up male male/male male_only orange_penis papyrus papyrus_(underswap) papyrus_au penis rape sans sans_(underswap) sans_au skeleton solo_focus spread_legs star_eyes star_shaped_pupils sweatdrop talking tears text underswap underswap_papyrus underswap_sans undertale_(series) undertale_au undertale_fanfiction yaoi
1girls 2d artist_request big_breasts blush breast_grab breasts ectobreasts female female_only fondling fondling_breast hands_on_breasts hard_nipples humanoid man_boobs moobs nipple_pinch nipples offscreen_character papyrus papyrus_(underswap) tagme text translation_request underswap_papyrus undertale_(series) undertale_au undertale_fanfiction
1girls 2d artist_request big_breasts blush breast_grab breasts ectobreasts female female_only fondling fondling_breast hands_on_breasts hard_nipples humanoid man_boobs moobs nipple_pinch nipples offscreen_character papyrus papyrus_(underswap) tagme text translation_request underswap_papyrus undertale_(series) undertale_au undertale_fanfiction
abs anon anonymous_character blush bottom_on_top breath ectobody eyes_rolling_back gay gray_background looking_pleasured male male/male male_only muscular muscular_male orange_blush orange_body orange_penis orange_tongue papyrus papyrus_(underswap) papyrus_au pecs pectorals penis redeyedgazer squatting sweat testicles underswap undertale white_pupils y/n yaoi
abs anon anonymous_character blush bottom_on_top breath ectobody eyes_rolling_back gay gray_background looking_pleasured male male/male male_only muscular muscular_male orange_blush orange_body orange_penis orange_tongue papyrus papyrus_(underswap) papyrus_au pecs pectorals penis redeyedgazer squatting sweat testicles underswap undertale white_pupils y/n yaoi
2boys alternate_universe anal anal_penetration anal_sex bed big_ass big_ass_(male) big_butt big_power_bottom blush bottom_on_top bubble_ass bubble_butt bunny_ears bunnysuit butt_grab dat_ass dat_butt dominant_male drool dumptruck_ass dumptruck_butt ectobody eyes_rolling_back fat_ass fat_butt gay huge_ass huge_butt incest large_ass large_butt looking_back looking_down looking_pleasured male male/male massive_ass massive_butt motion_lines on_bed on_bottom orange_body papyrus papyrus_(underswap) papyrus_au penetration penis plump_ass plump_butt power_bottom red_body redeyedgazer round_ass round_butt sans sans_(underfell) sans_au sharp_teeth skeleton small_sub_big_dom smiling sweating thick_ass thick_butt tongue_out underfell underfell_sans underswap underswap_papyrus undertale_(series) undertale_au white_background yaoi
2boys alternate_universe anal anal_penetration anal_sex bed big_ass big_ass_(male) big_butt big_power_bottom blush bottom_on_top bubble_ass bubble_butt bunny_ears bunnysuit butt_grab dat_ass dat_butt dominant_male drool dumptruck_ass dumptruck_butt ectobody eyes_rolling_back fat_ass fat_butt gay huge_ass huge_butt incest large_ass large_butt looking_back looking_down looking_pleasured male male/male massive_ass massive_butt motion_lines on_bed on_bottom orange_body papyrus papyrus_(underswap) papyrus_au penetration penis plump_ass plump_butt power_bottom red_body redeyedgazer round_ass round_butt sans sans_(underfell) sans_au sharp_teeth skeleton small_sub_big_dom smiling sweating thick_ass thick_butt tongue_out underfell underfell_sans underswap underswap_papyrus undertale_(series) undertale_au white_background yaoi
ahe_gao blue_body blue_penis blush brosboning drool drooling ectobody gay handjob incest jerkingoff_another lightsaber_dick male male_only masturbating_other papyrus papyrus_(underswap) papyrus_au partially_clothed penis sans sans_(underswap) sans_au sitting_on_lap skeleton sweat text tongue_out underswap underswap_papyrus underswap_sans undertale_au
ahe_gao blue_body blue_penis blush brosboning drool drooling ectobody gay handjob incest jerkingoff_another lightsaber_dick male male_only masturbating_other papyrus papyrus_(underswap) papyrus_au partially_clothed penis sans sans_(underswap) sans_au sitting_on_lap skeleton sweat text tongue_out underswap underswap_papyrus underswap_sans undertale_au
2d crying crying_with_eyes_open cum cum_inside ganzooky hazy_eyes humanoid incest monochrome papyrus papyrus_(underswap) papyrus_au penetration sans sans_(underfell) sans_au sex tagme tongue tongue_out underfell underfell_sans underswap underswap_papyrus undertale_(series) undertale_au
2d crying crying_with_eyes_open cum cum_inside ganzooky hazy_eyes humanoid incest monochrome papyrus papyrus_(underswap) papyrus_au penetration sans sans_(underfell) sans_au sex tagme tongue tongue_out underfell underfell_sans underswap underswap_papyrus undertale_(series) undertale_au
1boy animated_skeleton blush clothing covering_mouth covering_own_mouth crying egg_vibrator hand_covering_mouth hoodie male male_only mattress_grab pants_down papyrus papyrus_(underswap) papyrus_au sex_toy skeleton underswap underswap_papyrus undertale_au vibrator vibrator_cord
1boy animated_skeleton blush clothing covering_mouth covering_own_mouth crying egg_vibrator hand_covering_mouth hoodie male male_only mattress_grab pants_down papyrus papyrus_(underswap) papyrus_au sex_toy skeleton underswap underswap_papyrus undertale_au vibrator vibrator_cord
ass blush brother brother/brother brothers butt femboy gay incest male male/male male_only papyrus papyrus_(underswap) sans skeleton tagme tagme_(artist) underswap underswap_papyrus underswap_sans undertail undertale
ass blush brother brother/brother brothers butt femboy gay incest male male/male male_only papyrus papyrus_(underswap) sans skeleton tagme tagme_(artist) underswap underswap_papyrus underswap_sans undertail undertale
2boys animated_skeleton blue_blush blush brother brothers collar collarbone couch incest leg_grab legs legs_on_hips legs_up looking_at_another looking_at_partner male male_only on_couch orange_blush papyrus papyrus_(underswap) papyrus_au partially_clothed partially_undressed sans skeleton underswap underswap_papyrus undertale undertale_au unseen_male_face
2boys animated_skeleton blue_blush blush brother brothers collar collarbone couch incest leg_grab legs legs_on_hips legs_up looking_at_another looking_at_partner male male_only on_couch orange_blush papyrus papyrus_(underswap) papyrus_au partially_clothed partially_undressed sans skeleton underswap underswap_papyrus undertale undertale_au unseen_male_face
blush incest male male_only papyrus papyrus_(underswap) penetration sans sans_(underfell) thrusting underfell underswap undertale undertale_fanfiction
blush incest male male_only papyrus papyrus_(underswap) penetration sans sans_(underfell) thrusting underfell underswap undertale undertale_fanfiction
artist_logo bite_mark cussing gay incest lizheru lizherubones male papyrus papyrus_(underswap) papyrus_au sans sans_au swearing tagme underfell underfell_sans underswap underswap_papyrus undertale undertale_au undertale_fanfiction yaoi
artist_logo bite_mark cussing gay incest lizheru lizherubones male papyrus papyrus_(underswap) papyrus_au sans sans_au swearing tagme underfell underfell_sans underswap underswap_papyrus undertale undertale_au undertale_fanfiction yaoi