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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
<3_eyes 2018 3boys alternate_universe anal anal_sex animated_skeleton balls blush bodily_fluids bone bottomless bound clothed clothing digital_media_(artwork) english_text erection fallen9choirs fangs fellatio fingerless_gloves gloves glowing glowing_eyes grey_background group group_sex hands_tied handwear heart humanoid_penis incest lust!sans male male/male male_only male_penetrated male_penetrating moan one_eye_closed open_mouth oral papyrus papyrus_(underfell) papyrus_au penetration penile penis penis_grab purple_eyes purple_penis purple_tongue red_eyes sans sans_(underfell) sans_(underlust) sans_au sanscest sex simple_background skeleton speech_bubble tears teeth text threesome tongue trio undead underfell underfell_papyrus underfell_sans underlust underlust_sans undertale undertale_au undertale_fanfiction video_games yaoi
<3_eyes 2018 3boys alternate_universe anal anal_sex animated_skeleton balls blush bodily_fluids bone bottomless bound clothed clothing digital_media_(artwork) english_text erection fallen9choirs fangs fellatio fingerless_gloves gloves glowing glowing_eyes grey_background group group_sex hands_tied handwear heart humanoid_penis incest lust!sans male male/male male_only male_penetrated male_penetrating moan one_eye_closed open_mouth oral papyrus papyrus_(underfell) papyrus_au penetration penile penis penis_grab purple_eyes purple_penis purple_tongue red_eyes sans sans_(underfell) sans_(underlust) sans_au sanscest sex simple_background skeleton speech_bubble tears teeth text threesome tongue trio undead underfell underfell_papyrus underfell_sans underlust underlust_sans undertale undertale_au undertale_fanfiction video_games yaoi
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1cuntboy 2010s 2016 2boys 3boys alternate_universe animated animated_skeleton bandana blue_pussy bones boots closed_eyes cuntboy cuntboy_focus cuntboy_penetrated ectobody ectopenis ectopussy gif glowing_penis hand_on_head hand_on_hip head_grab incest intersex licking_penis male male_penetrating male_penetrating_cuntboy monochrome no_pants orange_penis papyrus papyrus_(underswap) papyrus_au penetration penis pussy sans sans_(underswap) sans_au scarf sex shoulder_pads simple_background skeleton solo_focus stroking_penis threesome titleze trio underswap underswap_papyrus underswap_sans undertale undertale_(series) undertale_au undertale_fanfiction unseen_male_face vaginal vaginal_insertion vaginal_penetration yaoi
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2018 2boys 2d bandana black_sclera black_sweatpants blowjob blue_bandana blue_blush blue_eyes blue_scarf cum cum_in_mouth cum_inside ectopenis fellatio hands_in_sleeves heart-shaped_pupils hoodie humanoid incest ksuriuri looking_up looking_up_at_partner male male_only oral orange_hoodie orange_penis papyrus papyrus_au penis sans sans_au scarf sex skeleton slight_blush sucking sweatpants underswap underswap_papyrus underswap_sans undertale_(series) undertale_au undertale_fanfiction unseen_male_face yaoi
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2018 2boys 2d alternate_universe anal anal_insertion anal_play anal_prodding anal_sex animated animated_skeleton ass ass_grab backsack ballsack begging big_ass big_butt black_gloves black_hoodie black_sclera blush bondage bone brother_and_brother brothers butt collar dead_source dildo drooling ectobody ectobutt english_text everydaysins femboy feminine_male gay gif gloves grabbing_ass hand_on_butt hoodie hoodie_only humanoid improvised_dildo improvised_sex_toy incest latex_gloves male male_focus male_penetrated monster papyrus_(underfell) papyrus_au rape red_ass red_blush red_body red_eyes sans sans_(underfell) sans_au sex_toy skeleton socks solo_focus spiked_collar sweating talking testicles text tongue tongue_out tumblr_username undead underfell underfell_papyrus underfell_sans undertale_(series) undertale_au undertale_fanfiction url white_socks
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