Search

(Supports wildcard *)
Tags

alien anthro blue_eyes blue_hair breasts bulge clothed clothing cybernetics cyborg danaume digitigrade dress eyebrows gynomorph hair horn intersex looking_aside machine mohawk multi_breast portal raised_arm ranged_weapon scar simple_background solo standing thinking_with_portals weapon 9:14 absurd_res animal_genitalia animal_penis anthro balls big_balls big_breasts big_nipples big_penis black_balls black_sclera breasts bulge cobra crouching curvy_figure digitigrade duo equine_penis facial_piercing female full-length_portrait furgonomics furry-specific_piercing gabriel_(gabriel1393) gauged_snake_hood genital_outline genitals grey_body grey_scales hand_behind_head hi_res huge_balls huge_penis hyper hyper_genitalia hyper_penis inverted_nipples ixela_(gabriel1393) knockedoutdragon larger_male lip_piercing male male/female markings nipples non-euclidean_sex penetration penis penis_outline piercing portal_sex portrait red_eyes red_markings reptile ridiculous_fit scales scalie simple_background size_difference smaller_female snake snake_hood snake_hood_piercing thick_tail thinking_with_portals 2021 2_horns 3_toes abs anal anal_penetration anthro balls biceps big_penis biped blush clothed clothing cursed_clothing cursed_item digitigrade dildo dildo_in_ass dildo_insertion dragon erection erection_pushing_underwear erection_under_clothing feet genitals grove_(game) grove_(regalbuster) hi_res horn humanoid_genitalia humanoid_penis long_tail male muscular muscular_anthro muscular_male nipples pecs penetrable_sex_toy penetration penis prehensile_tail purification reverse_strapon rubber_underwear rune runes scalie sex_toy sex_toy_in_ass sex_toy_insertion sine_wave solo thinking_with_portals thong toes triceps underwear underwear_fetish wingedwilly anthro black_body black_fur blue_hair blush butt featureless_crotch fur hair legendary_pokémon lying male mostly_nude nintendo on_back pokémon pokémon_(species) pokémorph portal_ring shaymin solo thinking_with_portals tydrian video_games white_body white_fur <3 absurd_res anal anal_penetration ankle_grab anthro bed blush cervix dildo duo erin_tannis female female/female female_penetrated female_penetrating female_penetrating_female flat_chested from_front_position furniture genitals hi_res internal internal_vaginal knotted_dildo leg_grab looking_pleasured nipples non-euclidean_sex nude on_bed open_mouth penetration penile_spines penis portal portal_sex pussy sex sex_toy sex_toy_in_ass sex_toy_insertion strapon sukiya thinking_with_portals uterus vaginal vaginal_penetration vibrator vibrator_in_ass young <3 absurd_res anal anal_penetration anthro bed blush bodily_fluids canid canine canis cervix cum cum_from_pussy cum_in_pussy cum_in_uterus cum_inside cumshot dalmatian dildo domestic_dog duo ejaculation erin_tannis excessive_cum female female/female female_penetrated female_penetrating female_penetrating_female flat_chested from_front_position furniture genital_fluids genitals hi_res internal internal_vaginal knotted_dildo lagomorph leporid looking_pleasured mammal nipples non-euclidean_sex nude on_bed open_mouth orgasm penetration penile_spines penis portal portal_sex pussy pussy_ejaculation pussy_juice rabbit sex sex_toy sex_toy_in_ass sex_toy_insertion simultaneous_orgasms strapon sukiya surprise sweat thinking_with_portals uterus vaginal vaginal_penetration vibrator vibrator_in_ass young 2021 anal anal_masturbation anthro anus autorimming backsack balls barefoot bodily_fluids butt butt_grab cum drex_(character) ejaculation eyes_closed feet felid feline genital_fluids genitals hand_on_butt handjob hi_res katzenkompf lynx male mammal masturbation non-euclidean_sex nude oral oral_masturbation pawpads penile portal portal_ring portal_sex rimming sex solo thinking_with_portals toe_curl 5_fingers anthro anus blush bodily_fluids brown_body brown_fur buckteeth claws clothing degu dipodid erection finger_claws fingers footwear fur genital_fluids genitals gerbil hand_on_hand hi_res jerboa kneeling legwear looking_back male mammal manual mostly_nude mouse murid murine octodontid penetrable_sex_toy penis portal portal_fleshlight precum rat ribbons rodent self_fuck sex_toy simple_background socks solo stockings tail_ribbon teasing teeth thinking_with_portals vulgarstarling whiskers absurd_res anthro aperture_logo aperture_science bar beach bikini blush bodily_fluids bovid bovine canid canine canis cattle clothed clothed_sex clothing cum cum_drip cum_in_pussy cum_inside cum_leaking detailed_background domestic_dog dripping exhibitionism female genital_fluids genitals hellanoided hi_res lots_of_cum male male/female mammal masturbation mouth_closed penetrable_sex_toy penis portal portal_(series) portal_fleshlight portal_panties public seaside sex sex_toy sitting swimwear thinking_with_portals valve vein veiny_penis video_games 2021 anal anal_penetration animal_genitalia animal_penis backsack balls big_balls big_butt big_penis bodily_fluids butt canine_penis cum cum_while_penetrated cumshot deep_rimming disembodied_hand ejaculation feral fur gangbang genital_fluids genitals group group_sex hi_res hoopa hoopa_(unbound) knot ky_(malamute) legendary_pokémon male male/male masturbation multi_arm multi_limb multicolored_body multicolored_fur nintendo open_mouth oral orgasm penetration penile penile_masturbation penis penis_size_difference perineum pokémon pokémon_(species) portal_ring questionable_consent reverse_gangbang rimming rusty_trombone sex size_difference spectrier tail_pull teeth thinking_with_portals tongue tongue_out video_games zacian zamazenta 2021 after_sex ambiguous_gender anal anal_fingering anal_penetration animal_genitalia animal_penis anthro anus backsack balls between_butts big_balls big_penis black_body bodily_fluids butt butt_grab butt_squish calyrex canine_penis carrot cum cum_in_ass cum_inside feral fingering first_person_view food food_fetish food_in_ass food_insertion food_play fur gangbang genital_fluids genitals glastrier group group_sex hand_on_butt hi_res hoopa hoopa_(unbound) huge_balls huge_penis improvised_dildo improvised_sex_toy knot ky_(malamute) legendary_pokémon male male/ambiguous male/male multi_arm multi_limb multicolored_body multicolored_fur nintendo penetration penis perineum plant pokémon pokémon_(species) portal_ring puffy_anus questionable_consent raised_tail reverse_gangbang sex size_difference spectrier squish struggling tail_grab thinking_with_portals urshifu vegetable video_games white_body wide_eyed zacian zamazenta animal_genitalia animal_penis autofellatio bloom equid equine equine_penis erection feral friendship_is_magic genitals hasbro hi_res horn male mammal masturbation my_little_pony non-euclidean_sex oral oral_masturbation peachmayflower penile penile_masturbation penis portal_(series) portal_ring portal_sex solo thinking_with_portals valve video_games winged_unicorn wings <3 anal animal_genitalia animal_penis anthro blush bodily_fluids camgirl conditional_dnp contest cum cum_in_ass cum_in_mouth cum_in_pussy cum_inside dialogue domination donut_anus double_penetration english_text equine_penis exhibitionism fellatio female female_domination foot_fetish foot_play footjob foreskin fucking_machine genital_fluids genitals groupchat houndoom hybrid knot lustylamb machine magic male male/female nintendo non-euclidean_sex oral orgasm_denial penetration penile penis pokémon pokémon_(species) portal_sex portals pussyjob salazzle sex solo streaming tail_curl teasing text thinking_with_portals triple_penetration uncut vaginal video_games anal anal_penetration anthro anthro_on_anthro anthro_penetrated anthro_penetrating anthro_penetrating_anthro anus balls barefoot beverage blush bodily_fluids bootiful_yeen bottomwear braeburned cafe canid canine cellphone clothed clothing cum cum_in_ass cum_inside embarrassed feet fully_clothed fur genital_fluids genitals hi_res holding_object humanoid_genitalia humanoid_penis hyaenid legwear lying male male/male male_penetrated male_penetrating male_penetrating_male mammal maned_wolf menu mistaken_identity non-euclidean_sex onomatopoeia open_mouth orgasm paws penetrable_sex_toy penetration penis pepper_(scornedgoat) phone portal portal_fleshlight portal_panties portal_sex public questionable_consent raccoon_dog sex_toy sitting smartphone sound_effects surprise tanuki tanuki_(notadoctor) text thinking_with_portals topwear ! 2021 abdominal_bulge animal_genitalia animal_penis bestiality big_breasts bikupan black_clothing blush bodily_fluids bottomwear breasts brown_hair canid canine canine_penis canis clothed clothing cum cum_in_pussy cum_in_uterus cum_inside duo erection female female_penetrated feral genital_fluids genitals glistening glistening_body group hair harry_potter hermione_granger hi_res human human_focus human_penetrated internal knot knotting male male/female male_penetrating male_penetrating_female mammal midriff navel non-euclidean_sex ovaries panties penetration penis podium portal portal_panties portal_sex public questionable_consent sex shirt sitting skirt surprise surprise_sex surprised_expression tank_top thinking_with_portals topwear underwear uterus vaginal vaginal_penetration wavy_hair amputee anal anal_penetration anthro anthro_on_anthro anthro_penetrated anthro_penetrating anthro_penetrating_anthro bodily_fluids canid canine cinderace crying cum cum_in_ass cum_inside cum_on_penis cum_while_penetrated dagasi disability forced genital_fluids genitals group handjob handjob_while_penetrating hi_res kissing lagomorph lucario male male/male male_penetrated male_penetrating male_penetrating_male mammal nintendo penetration penile penis pokémon pokémon_(species) quadruple_amputee sex tapering_penis tears thinking_with_portals trio video_games anus balls blush bodily_fluids breasts butt canid canine dagasi detailed_background digitigrade eating erection fangs female female_penetrated fur genitals green_eyes grey_body grey_fur hi_res hoopa legendary_pokémon looking_back male mammal nintendo nipples non-euclidean_sex open_mouth penetration penis pink_penis pokémon pokémon_(species) portal_sex pupils red_balls saliva saliva_string sex slit_pupils smile sweat thinking_with_portals tongue tongue_out vaginal vaginal_penetration video_games yellow_sclera zoroark <3 <3_eyes assisted_sex balls blush bodily_fluids canid canine claws dagasi eating female female_penetrated feral finger_claws forced fur genitals gloves_(marking) green_eyes grey_body grey_fur group hi_res hoopa leg_markings legendary_pokémon looking_pleasured mammal markings nintendo non-euclidean_sex open_mouth pawpads penetration penis pink_penis pokémon pokémon_(species) portal_sex pussy rape red_balls red_claws secretly_loves_it sex size_difference socks_(marking) tears thinking_with_portals vaginal vaginal_penetration video_games zoroark zorua amputee anal anal_penetration anthro anthro_on_anthro anthro_penetrated anthro_penetrating anthro_penetrating_anthro bodily_fluids canid canine cinderace crying cum cum_inside dagasi disability forced genital_fluids group handjob hi_res kissing lagomorph lucario male male/male male_penetrated male_penetrating male_penetrating_male mammal nintendo penetration penile pokémon pokémon_(species) quadruple_amputee sex tears thinking_with_portals trio video_games anthro balls blush bodily_fluids braixen canid canine censored cinderace claws dagasi drooling eeveelution erection espeon fangs feral finger_claws fur genital_fluids genitals green_eyes grey_body grey_fur group hoopa inner_ear_fluff legendary_pokémon looking_at_genitalia looking_at_penis male mammal nintendo penis pokémon pokémon_(species) precum pupils red_body red_claws red_eyes red_fur saliva shaded slit_pupils sweat teleportation thinking_with_portals tuft video_games white_body white_fur yellow_body yellow_fur zoroark zorua anthro batsy bodily_fluids canid canine canis chiropteran exhibitionism fellatio genitals intersex knotting male male/male maleherm mammal oral oral_knotting penile penis public sex snejek solo tears thinking_with_portals train vehicle wolf <3 <3_eyes amputee anthro blue_body blue_fur blush bodily_fluids breast_suck breasts brown_body brown_fur brown_hair censored clenched_teeth crying dagasi disability duo_focus felid feline female female_penetrated feral forced fucked_silly fur genital_fluids group hair hoopa lagomorph legendary_pokémon lopunny love_pillow male male/female mammal narrowed_eyes nintendo nipples non-euclidean_sex penetration pokémon pokémon_(species) pussy_juice quadruple_amputee questionable_consent rape shinx sucking sweat tears teeth thinking_with_portals thrusting vaginal vaginal_penetration video_games absbor alpha_channel ambiguous_gender blue green mob portal portals simple_background slime smile solo solo_focus thinking_with_portals transparent_background 2020 anthro areola black_background blizzard_entertainment breasts claws clothing cunnilingus digital_media_(artwork) fangs female finger_claws fur genitals hair hat headgear headwear hi_res highlights_(coloring) leg_grab licking magic mammal masturbation mostly_nude nipples open_mouth oral pandaren planktonheretic portal pussy red_highlights self_lick sex sharp_teeth simple_background solo standing teeth thick_thighs thigh_grab thinking_with_portals toe_claws tongue tongue_out ursid vaginal video_games warcraft white_body white_fur white_hair witch_hat ! 2021 ? ?! abdominal_bulge animal_genitalia animal_penis bestiality big_breasts bikupan black_clothing blush bottomwear breasts brown_hair canid canine canine_penis canis clothed clothing duo erection female female_penetrated feral genitals grey_clothing group hair harry_potter hermione_granger hi_res human human_focus internal male male/female male_penetrating male_penetrating_female mammal midriff navel non-euclidean_sex ovaries panties penetration penis podium portal portal_panties portal_sex public sex shirt sitting skirt surprise surprise_sex surprised_expression tank_top thinking_with_portals topwear underwear uterus vaginal vaginal_penetration wavy_hair ! 2021 abdominal_bulge animal_genitalia animal_penis bestiality big_breasts bikupan black_clothing blush bodily_fluids bottomwear breasts brown_hair canid canine canine_penis canis clothed clothing cum cum_in_pussy cum_in_uterus cum_inside duo erection female female_penetrated feral genital_fluids genitals grey_clothing group hair harry_potter hermione_granger hi_res human human_focus impregnation internal knot knotting male male/female male_penetrating male_penetrating_female mammal midriff navel non-euclidean_sex ovaries ovum panties penetration penis podium portal portal_panties portal_sex public sex shirt sitting skirt sperm_cell surprise surprise_sex surprised_expression tank_top thinking_with_portals topwear underwear uterus vaginal vaginal_penetration wavy_hair anus asura autocunnilingus claws colored digital_media_(artwork) female grey_body grey_claws grey_hair grey_skin guild_wars hair humanoid ivory-raven licking masturbation nude oral oral_masturbation portal purple_background self_lick shaded simple_background solo spread_legs spreading thinking_with_portals tongue tongue_out vaginal vaginal_masturbation video_games 2021 anthro clothing comic digital_drawing_(artwork) digital_media_(artwork) domestic_ferret english_text greyscale hi_res humor innuendo looking_at_viewer male mammal monochrome mustela mustelid musteline narrowed_eyes nik159 portal simple_background smile smirk solo standing text thinking thinking_with_portals underwear url white_background 2021 anthro backrub bent_over black_and_white canid canine dated english_text hi_res humor looking_pleasured male mammal massage monochrome nik159 open_mouth open_smile pen_(artwork) portal smile solo standing text thinking_with_portals tongue tongue_out traditional_media_(artwork) url anal anal_penetration animal_genitalia animal_penis bluefuzzydragon bodily_fluids cum cum_inside dragon ejaculation equid equine equine_penis fellatio genital_fluids genitals group hi_res horse male male/male mammal oral penetration penile penis portal_(series) sex thinking_with_portals valve video_games 2020 4_fingers anal anal_masturbation anthro arm_tuft autorimming back_tuft barefoot belly_tuft bent_over biped black_and_grey black_claws black_ears black_eyebrows black_text butt canid canine cheek_tuft claws digitigrade dipstick_ears english_text eyebrows eyes_closed facial_tuft fingers fox fur fur_markings fur_tuft gloves_(marking) grey_background hand_on_butt hand_on_tail head_tuft hi_res holding_butt holding_tail humor leg_tuft line_art male mammal markings masturbation monochrome multicolored_ears neck_tuft nik159 nude oral oral_masturbation paws pen_(artwork) portal portal_ring portals raised_tail rimming self_rimming sex side_view simple_background solo standing text thinking_with_portals traditional_media_(artwork) tuft 3:4 5_fingers anthro areola areola_slip big_breasts bikini black_body bodily_fluids bottomwear breasts butt clothed clothing cum cum_in_pussy cum_inside cum_leaking curvy_figure cutie_mark disembodied_penis equid equine fan_character female fingers genital_fluids genitals girlsay group hair hasbro hi_res horn huge_breasts legwear male male/female mammal microskirt miniskirt multicolored_body my_little_pony navel nipple_outline patreon penetration penis pink_eyes portal public pussy pussy_floss s.leech_(oc) sex signature skimpy skirt squish standing subscribestar swimwear text thick_thighs thigh_highs thigh_squish thinking_with_portals two_tone_body unicorn url vaginal vaginal_penetration voluptuous white_body white_hair wide_hips 2020 absurd_res anthro antlers autocunnilingus brown_body brown_fur cervid eyewear female fur genitals glasses green_hair hair hi_res horn luryry mammal masturbation oral oral_masturbation portal pussy solo thinking_with_portals tongue tongue_out vaginal vaginal_masturbation 2020 3_fingers absurd_res accessory ambiguous_species anthony_the_zoroark anthro being_watched big_penis black_body black_clothing black_fur black_hair black_panties black_underwear blue_body blue_clothing blue_eyes blue_nipples blue_panties blue_penis blue_skin blue_spots blue_stripes blue_underwear blush bottomwear bulge canid claws clothed clothing crowd dialogue dot_eyes duo_focus ear_piercing english_text erection eyebrows felino finger_claws fingers foreskin fur gastropod gastropod_shell genitals grey_body grey_fur group hair hair_accessory hairband hi_res inside jewelry looking_at_another looking_away looking_down magic magician male mammal markings mitchell_(felino) mollusk mollusk_shell necklace nintendo nipples no_pupils open_mouth panties panties_only pattern_bottomwear pattern_clothing pattern_panties pattern_underwear penis piercing pokémon pokémon_(species) ponytail portal portal_panties purple_body purple_skin purple_spots purple_stripes raised_arm raised_eyebrow red_body red_claws red_fur red_hair red_inner_ear red_markings shell silhouette smile snail sparkles speech_bubble spotlight spots spotted_body spotted_bottomwear spotted_clothing spotted_panties spotted_skin spotted_underwear stage striped_body striped_skin stripes text thinking_with_portals tight_clothing topless uncut underwear underwear_only video_games white_eyes zoroark ! 2020 3_fingers abdominal_bulge absurd_res accessory ambiguous_species anthony_the_zoroark anthro anthro_on_anthro anthro_penetrated anthro_penetrating anthro_penetrating_anthro becoming_erect being_watched big_penis black_body black_clothing black_fur black_hair black_panties black_underwear blue_body blue_clothing blue_eyes blue_nipples blue_panties blue_skin blue_spots blue_stripes blue_underwear bottomwear bulge bulge_through_clothing canid claws clothed clothing crowd dialogue dot_eyes duo_focus ear_piercing english_text felino finger_claws fingers fist fur gastropod gastropod_shell genitals grey_body grey_fur group hair hair_accessory hairband hi_res interspecies jewelry looking_at_another looking_down magic magician male male/male male_penetrated male_penetrating male_penetrating_male mammal markings mitchell_(felino) moan mollusk mollusk_shell motion_lines necklace nintendo nipples no_pupils non-euclidean_sex one_eye_closed panties panties_only pattern_bottomwear pattern_clothing pattern_panties pattern_underwear penetration penis piercing pokémon pokémon_(species) ponytail portal portal_panties portal_sex profanity purple_body purple_skin purple_stripes red_body red_claws red_fur red_hair red_inner_ear red_markings shell silhouette snail sparkles speech_bubble spotlight spots spotted_body spotted_bottomwear spotted_clothing spotted_panties spotted_skin spotted_underwear stage striped_body striped_skin stripes surprise surprise_sex text thinking_with_portals thought_bubble tight_clothing topless twitching underwear underwear_only video_games white_eyes zoroark <3 2020 3_fingers abdominal_bulge absurd_res accessory ambiguous_species anthony_the_zoroark anthro anthro_on_anthro anthro_penetrated anthro_penetrating anthro_penetrating_anthro applause being_watched black_body black_fur black_hair blue_body blue_eyes blue_nipples blue_skin blue_spots blue_stripes bodily_fluids bulge butt canid claws clothed clothing crowd cum cum_belly cum_from_ass cum_in_ass cum_inflation cum_inside cum_on_butt cum_on_clothing cum_on_leg cum_on_penis cum_on_stomach cum_splatter cum_through_clothing cumshot dialogue dot_eyes drooling duo_focus ear_piercing ejaculation english_text erection erection_under_clothing felino finger_claws fingers fist fur gastropod gastropod_shell genital_fluids genitals grey_body grey_fur group hair hair_accessory hairband half-closed_eyes hand_on_penis hands-free hi_res inflation looking_at_another looking_down looking_up magic magician male male/male male_penetrated male_penetrating male_penetrating_male mammal mitchell_(felino) mollusk mollusk_shell motion_lines narration narrowed_eyes nintendo nipples non-euclidean_sex onomatopoeia open_mouth orgasm panties panties_only penetration penis piercing pokémon pokémon_(species) ponytail portal portal_panties portal_sex purple_body purple_skin purple_stripes raised_arm red_claws red_hair red_inner_ear saliva shell silhouette snail sound_effects sparkles speech_bubble spotlight spots spotted_body spotted_skin stage striped_body striped_skin stripes surprise surprise_sex sweat text thinking_with_portals topless twitching underwear underwear_only video_games wet wet_clothing white_eyes zoroark 1:1 anal anthro anus balls big_penis blush bodily_fluids butt duo female genitals hi_res male male/female mister_ekiz oral penis portal rimming sex sweat thinking_with_portals animal_genitalia animal_penis animated anthro anus areola balls big_breasts big_penis blue_hair bodily_fluids breasts chango-tan cum cum_inflation equid equine equine_penis freckles genital_fluids genitals hair herm hi_res horse inflation intersex mammal multicolored_eyes multicolored_hair nipples non-euclidean_sex nude penetration penis pink_hair portal_sex pussy saturni self_fuck self_impregnation self_inflation sex simple_background smile solo thinking_with_portals arthropod balls big_balls black_balls black_body black_exoskeleton black_fur black_horn blonde_hair bodily_fluids bouncing_balls butt changeling cum cum_drip cum_from_ass cum_in_ass cum_inside cum_on_balls cum_on_butt cum_on_leg cum_on_stomach cum_splatter cumshot dripping duo ejaculation equid equine exoskeleton extreme_french_kiss feral feral_on_feral feral_penetrated feral_penetrating feral_penetrating_feral french_kissing friendship_is_magic fur genital_fluids genitals green_body green_eyes green_fur green_hair green_sclera green_tongue grey_body grey_fur grey_hair hair hasbro hi_res hole_(anatomy) horn horse kissing larger_male long_tongue looking_pleasured male male/male male_penetrated male_penetrating male_penetrating_male mammal moan motion_lines my_little_pony neck_bulge non-euclidean_sex onomatopoeia orgasm penetration perched pony portal_(series) portal_sex saliva side_view simple_background size_difference smaller_male sound_effects text thinking_with_portals tongue twitching valve video_games white_background youwannaslap 2020 aperture_laboratories balls bodily_fluids bottomwear canid canine clothing cum cum_in_mouth cum_inside duo feral forced forced_oral gear_(foxgear) genital_fluids genitals girly japanese_text knot lagomorph leporid male male/male mammal mask nude oral penetrable_sex_toy pillow portal portal_fleshlight portal_mask public public_transportation rabbit sex sex_toy shirt shorts skizu tank_top text thinking_with_portals topwear aardwolf anneke_(weaver) anthro blush bodily_fluids bovid breasts caprine clenched_teeth clothed clothing crossed_legs duo eyes_closed famished_(artist) female fur head_tuft hi_res hooves hyaenid leaning_on_wall looking_pleasured male male/female mammal non-euclidean_sex nude outside pack_street paws penetrable_sex_toy penetration portal_panties portal_sex portals public remmy_cormo sex_toy sheep simple_background stripes tail_between_legs teeth thinking_with_portals tongue tongue_out tuft wool_(fur) <3 <3_eyes 3:4 african_wild_dog anthro bodily_fluids canid canine cum cum_bubbles cum_in_mouth cum_inside cum_leaking cum_on_face genital_fluids male mammal mask messy oral portal public_use skully solo thinking_with_portals