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underswap papyrus

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2boys alternate_universe anal anal_sex animated_skeleton anterior_nasal_aperture bandana blue_bandanna blue_clothing blue_eyes blue_glans blue_gloves blue_handwear blue_hat blue_headwear blue_kerchief blue_penis blurry blush bodily_fluids bone bonetrouble bottomless clothed clothing cowboy cowboy_hat cowgirl_position cum cumshot duo ejaculation erection from_front_position gay genital_fluids genitals glans glistening glistening_genitalia glistening_glans glistening_penis gloves grin halloween halloween_costume handwear hat headgear headwear humanoid humanoid_genitalia humanoid_on_humanoid humanoid_penetrated humanoid_penetrating humanoid_penetrating_humanoid humanoid_penis incest kerchief lightsaber_dick male male/male male_only male_penetrated male_penetrating male_penetrating_male neckerchief non-human on_bottom on_top one_eye_closed orgasm papyrus penetration penile penile_penetration penis penis_in_ass power_bottom sans sex simple_background skeleton smile star_eyes sweat teeth undead underswap underswap_papyrus underswap_sans undertale video_games yaoi
2boys alternate_universe anal anal_sex animated_skeleton anterior_nasal_aperture bandana blue_bandanna blue_clothing blue_eyes blue_glans blue_gloves blue_handwear blue_hat blue_headwear blue_kerchief blue_penis blurry blush bodily_fluids bone bonetrouble bottomless clothed clothing cowboy cowboy_hat cowgirl_position cum cumshot duo ejaculation erection from_front_position gay genital_fluids genitals glans glistening glistening_genitalia glistening_glans glistening_penis gloves grin halloween halloween_costume handwear hat headgear headwear humanoid humanoid_genitalia humanoid_on_humanoid humanoid_penetrated humanoid_penetrating humanoid_penetrating_humanoid humanoid_penis incest kerchief lightsaber_dick male male/male male_only male_penetrated male_penetrating male_penetrating_male neckerchief non-human on_bottom on_top one_eye_closed orgasm papyrus penetration penile penile_penetration penis penis_in_ass power_bottom sans sex simple_background skeleton smile star_eyes sweat teeth undead underswap underswap_papyrus underswap_sans undertale video_games yaoi
2boys alternate_universe animated_skeleton anterior_nasal_aperture bandana blue_bandanna blue_clothing blue_eyes blue_gloves blue_handwear blue_hat blue_headwear blue_kerchief blush bodily_fluids bone bonetrouble bottomless clothed clothing cowboy cowboy_hat cowgirl_position duo from_front_position gay gloves grin halloween halloween_costume handwear hat headgear headwear humanoid incest kerchief male male/male male_only neckerchief non-human on_bottom on_top one_eye_closed papyrus sans sex simple_background skeleton smile star_eyes sweat teeth undead underswap underswap_papyrus underswap_sans undertale video_games yaoi
2boys alternate_universe animated_skeleton anterior_nasal_aperture bandana blue_bandanna blue_clothing blue_eyes blue_gloves blue_handwear blue_hat blue_headwear blue_kerchief blush bodily_fluids bone bonetrouble bottomless clothed clothing cowboy cowboy_hat cowgirl_position duo from_front_position gay gloves grin halloween halloween_costume handwear hat headgear headwear humanoid incest kerchief male male/male male_only neckerchief non-human on_bottom on_top one_eye_closed papyrus sans sex simple_background skeleton smile star_eyes sweat teeth undead underswap underswap_papyrus underswap_sans undertale video_games yaoi
2019 2boys 2d 3:2 alternate_universe animated animated_skeleton anterior_nasal_aperture ass bandana bite biting_lip biting_own_lip blue_clothing blue_gloves blue_handwear blush bone brother brothers closed_eyes clothed clothing duo fully_clothed gif gloves green_background handwear humanoid implied_incest incest kerchief lizheru lizherubones looking_at_another loop male male_only motion_lines neckerchief orange_clothing papyrus sans self_bite shaking_ass shaking_butt short_playtime sibling signature simple_background skeleton teasing teeth twerking undead underswap underswap_papyrus underswap_sans undertale video_games
2019 2boys 2d 3:2 alternate_universe animated animated_skeleton anterior_nasal_aperture ass bandana bite biting_lip biting_own_lip blue_clothing blue_gloves blue_handwear blush bone brother brothers closed_eyes clothed clothing duo fully_clothed gif gloves green_background handwear humanoid implied_incest incest kerchief lizheru lizherubones looking_at_another loop male male_only motion_lines neckerchief orange_clothing papyrus sans self_bite shaking_ass shaking_butt short_playtime sibling signature simple_background skeleton teasing teeth twerking undead underswap underswap_papyrus underswap_sans undertale video_games
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
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2018 alternate_universe apron bigger_male blowjob blowjob_face blue_eyes blue_scarf bottomless comic_sans cum cum_on_face ectopenis english fallen9choirs fellatio incest larger_male long_skirt male orange_cock orange_hoodie orange_penis papyrus papyrus_au rule_63 sans sans_au skeleton star_eyes tagme underswap underswap_papyrus underswap_sans undertail undertale undertale_au
2018 alternate_universe apron bigger_male blowjob blowjob_face blue_eyes blue_scarf bottomless comic_sans cum cum_on_face ectopenis english fallen9choirs fellatio incest larger_male long_skirt male orange_cock orange_hoodie orange_penis papyrus papyrus_au rule_63 sans sans_au skeleton star_eyes tagme underswap underswap_papyrus underswap_sans undertail undertale undertale_au
2boys big_sub big_sub_small_dom big_sub_small_top bigger_sub blue_eyes covering_face daydream daydreaming dreaming embarrassed english_text flexibility flexible funny gay gay_domination gay_sex hiding_face holding_leg holding_leg_up holding_legs holding_legs_up imagining incest larger_penetrated male papyrus papyrus_au sans sans_(underswap) sans_au smaller_dom smaller_dom_larger_sub smaller_dominant smaller_penetrating splits sympharin symphysins text thinking_about_sex underswap underswap_papyrus underswap_sans undertale_au
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cokoyang male_only papyrus skeleton tagme underswap underswap_papyrus undertail undertale
cokoyang male_only papyrus skeleton tagme underswap underswap_papyrus undertail undertale
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1boy 1male animated_skeleton belly bhm big_belly big_moobs fat fat_man gay huge_belly huge_moobs hyper hyper_fat hyper_overweight immobile love_handles male male_only male_solo moobs morbidly_obese morbidly_obese_male nipples no_humans obese obese_male overweight overweight_male papyrus skeleton solo solo_male thick thick_ass thick_legs underswap underswap_papyrus undertale undertale_fanfiction weight_gain
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animated big_belly blue_body blue_penis cumflation dog_ears dog_tail ectobody ectopenis ectopussy gif incest inflation orange_body orange_pussy papyrus_au sans sans_au skeleton slideshow underswap underswap_papyrus underswap_sans undertale undertale_au undertale_fanfiction white_background wolf
animated big_belly blue_body blue_penis cumflation dog_ears dog_tail ectobody ectopenis ectopussy gif incest inflation orange_body orange_pussy papyrus_au sans sans_au skeleton slideshow underswap underswap_papyrus underswap_sans undertale undertale_au undertale_fanfiction white_background wolf
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1girls 2boys ambiguous_penetration blue_shorts blushing brown_hair brown_shorts cigarette doggy_style female female_frisk female_human female_penetrated frisk human human_penetrated kissing male male/female male/female/male male_penetrating male_penetrating_female on_bed orange_hoodie papyrus papyrus_(underswap) papyrus_au pussy_juice_drip red_gloves red_scarf red_sneakers rope skeletons smoking straight sweating underswap underswap_papyrus undertale undertale_au undertale_fanfiction unseen_female_face white_background white_shirt 悟空
1girls 2boys ambiguous_penetration blue_shorts blushing brown_hair brown_shorts cigarette doggy_style female female_frisk female_human female_penetrated frisk human human_penetrated kissing male male/female male/female/male male_penetrating male_penetrating_female on_bed orange_hoodie papyrus papyrus_(underswap) papyrus_au pussy_juice_drip red_gloves red_scarf red_sneakers rope skeletons smoking straight sweating underswap underswap_papyrus undertale undertale_au undertale_fanfiction unseen_female_face white_background white_shirt 悟空
2boys 2d artist_request bedroom blue_eyes brothers clothed cum cum_in_ass cum_inside fangs gay humanoid incest male male_only papyrus_au sans sans_au sex tagme tagme_(artist) underswap underswap_papyrus underswap_sans undertale_(series) undertale_au undertale_fanfiction
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alternate_universe animated_skeleton bone brother brothers duo ectopenis glowing_penis hi_res humanoid incest lizheru lizherubones male male_only oral papyrus papyrus_(underswap) papyrus_au sans sans_(underswap) sans_au sex sibling skeleton solo_focus television undead underswap underswap_papyrus underswap_sans undertale undertale_au undertale_fanfiction video_games
alternate_universe animated_skeleton bone brother brothers duo ectopenis glowing_penis hi_res humanoid incest lizheru lizherubones male male_only oral papyrus papyrus_(underswap) papyrus_au sans sans_(underswap) sans_au sex sibling skeleton solo_focus television undead underswap underswap_papyrus underswap_sans undertale undertale_au undertale_fanfiction video_games
deviantart_username frisk gay human human_on_humanoid human_penetrating humanoid_penetrated male male/male male_frisk male_human male_only papyrus papyrus_(underswap) papyrus_au penetration skeleton sketch underswap underswap_papyrus undertale undertale_au undertale_fanfiction yaoi
deviantart_username frisk gay human human_on_humanoid human_penetrating humanoid_penetrated male male/male male_frisk male_human male_only papyrus papyrus_(underswap) papyrus_au penetration skeleton sketch underswap underswap_papyrus undertale undertale_au undertale_fanfiction yaoi
1:1 anon bone cussing ectopenis english_text gay human lizheru lizherubones mammal oral orange_penis papyrus papyrus_(underswap) papyrus_au penis skeleton swearing text underswap underswap_papyrus undertale undertale_au undertale_fanfiction unseen_male_face video_games yaoi
1:1 anon bone cussing ectopenis english_text gay human lizheru lizherubones mammal oral orange_penis papyrus papyrus_(underswap) papyrus_au penis skeleton swearing text underswap underswap_papyrus undertale undertale_au undertale_fanfiction unseen_male_face video_games yaoi
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1:1 2boys absurd_res anal anal_penetration anal_sex animated_skeleton balls bara bone brother brothers cum cum_in_ass cum_inside duo gay hi_res humanoid_penis incest male male/male male_only male_penetrated male_penetrating male_penetrating_male orgasm papyrus papyrus_(underswap) papyrus_au penetration penis redeyedgazer sans sans_(underswap) sans_au sibling skeleton undead underswap underswap_papyrus underswap_sans undertale undertale_au undertale_fanfiction video_games yaoi
1:1 2boys absurd_res anal anal_penetration anal_sex animated_skeleton balls bara bone brother brothers cum cum_in_ass cum_inside duo gay hi_res humanoid_penis incest male male/male male_only male_penetrated male_penetrating male_penetrating_male orgasm papyrus papyrus_(underswap) papyrus_au penetration penis redeyedgazer sans sans_(underswap) sans_au sibling skeleton undead underswap underswap_papyrus underswap_sans undertale undertale_au undertale_fanfiction video_games yaoi
2019 2boys 2d artist_name bandana black_sweatpants blue_bandana blue_blush blue_eyes blue_scarf bone ectopenis grumpy grumpy_sub hoodie hugging_penis humanoid incest lizheru lizherubones male male/male male_only orange_hoodie orange_penis papyrus_au penis sans sans_au scarf shoulder_pads simple_background skeleton solo_focus starry_eyes sweatpants text underswap underswap_papyrus underswap_sans undertale_(series) undertale_au undertale_fanfiction unseen_male_face white_background
2019 2boys 2d artist_name bandana black_sweatpants blue_bandana blue_blush blue_eyes blue_scarf bone ectopenis grumpy grumpy_sub hoodie hugging_penis humanoid incest lizheru lizherubones male male/male male_only orange_hoodie orange_penis papyrus_au penis sans sans_au scarf shoulder_pads simple_background skeleton solo_focus starry_eyes sweatpants text underswap underswap_papyrus underswap_sans undertale_(series) undertale_au undertale_fanfiction unseen_male_face white_background