Search

(Supports wildcard *)
Tags

2010s 2015 2boys 2d 2d_(artwork) animated_skeleton anon anonymous anonymous_male artist_name bad_id bad_tumblr_id blue_background blue_eye blue_tongue bottom_sans clothed cum cum_on_face cum_on_tongue digital_media_(artwork) ectotongue faceless_male fellatio genitals glowing_eye inactive_account jacket licking licking_penis male male/male male_only monster multiple_views noxiousaberration oral penis sans sans_(undertale) sex simple_background skeleton solo_focus submissive submissive_male sweat tongue tumblr uke_sans undead undertale undertale_(series) unseen_male_face upper_body video_game_character video_games yaoi 1girl 1girl 1girl ahoge arm_support bad_id bad_twitter_id bed big_breasts bikini bikini_top_only blush breasts brick_wall clothed_female commentary_request female_focus female_only huge_breasts inactive_account indoors kojirou! long_hair looking_at_viewer mature mature_female nami nami_(one_piece) navel on_bed one_piece orange_eyes orange_hair pillow sitting smile solo_female solo_focus strap_pull striped_bikini striped_clothes swimsuit tagme unfastened window 2010s 2015 2boys 2d 2d_(artwork) 2males animated_skeleton arm_support bad_id bad_tumblr_id big_penis bigger_male blue_background bodily_fluids bottom_sans brother brother/brother brother_and_brother brothers closed_eyes clothed clothed_male clothing digital_media_(artwork) duo ectopenis ectotongue erection fellatio fluids fontcest genitals gloves hooded_jacket hoodie inactive_account incest jacket larger_male male male/male male_only monster noxiousaberration open_mouth oral orange_penis orange_tongue papyrus papyrus_(undertale) papysans partially_colored penis penis_grab penis_through_clothing sans sans_(undertale) scarf seme_papyrus sex skeleton smaller_male solo_focus sweat testicles third-party_source tongue top_papyrus tumblr uke_sans undead undertale undertale_(series) video_game_character video_games yaoi 1boy 2010s 2015 2d 2d_(artwork) animated_skeleton ass bad_id bad_tumblr_id blue_background blue_tongue bondage bottom_sans bound bound_legs completely_nude completely_nude_male digital_media_(artwork) ectopenis ectotongue genitals inactive_account legs_apart male male_focus male_only monster noxiousaberration nude penis sans sans_(undertale) simple_background skeleton submissive submissive_male tentacle third-party_source tied_arms tied_up tongue tongue_out tumblr uke_sans undead undertale undertale_(series) video_game_character video_games ! 2020s 2022 2boys 2d 2d_(artwork) abosinsin animated_skeleton artist_name bad_id bad_twitter_id bigger_male blush blushing_male brother brother/brother brother_and_brother brothers clothed clothing comic_sans digital_media_(artwork) drinking_straw duo ectotongue english_text fontcest horny horny_male implied_incest inactive_account larger_male male male/male male_only monster orange_tongue papyrus papyrus_(font) papyrus_(undertale) papysans plastic_cup sans sans_(undertale) size_difference skeleton smaller_male speech_bubble talking_to_another text text_bubble tongue twitter_username undead undertale undertale_(series) upper_body video_game_character video_games visible_breath white_background yaoi 1:1 1:1_aspect_ratio 2020s 2021 2boys 2d 2d_(artwork) 2d_animation abosinsin anal animated animated_skeleton animation bad_id bad_twitter_id big_dom big_dom_small_sub big_penis bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller bottom_sans brother brother/brother brother_and_brother brother_penetrating_brother brothers carrying carrying_another carrying_partner carrying_position clothed cropped cropped_image digital_media_(artwork) duo ectopenis edit edited fontcest inactive_account incest larger_male larger_penetrating larger_penetrating_smaller legwear loop looping_animation low_res low_resolution lowres male male/male male_only male_penetrated male_penetrating male_penetrating_male maledom monster mp4 no_sound orange_penis papyrus papyrus_(undertale) papysans penetration penis sans sans_(undertale) seme_papyrus sex short_playtime shorter_than_10_seconds skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom socks stand_and_carry_position third-party_edit thrusting top_papyrus uke_sans undead undertale undertale_(series) video video_game_character video_games webm white_background yaoi 1:1 1:1_aspect_ratio 2020s 2021 2boys 2d 2d_(artwork) 2d_animation abosinsin anal animated_skeleton animation bad_id bad_twitter_id big_dom big_dom_small_sub big_penis bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller bottom_sans brother brother/brother brother_and_brother brother_penetrating_brother brothers carrying carrying_another carrying_partner carrying_position clothed cropped cropped_image digital_media_(artwork) duo ectopenis edit edited fontcest gif inactive_account incest larger_male larger_penetrating larger_penetrating_smaller legwear loop looping_animation low_res low_resolution lowres male male/male male_only male_penetrated male_penetrating male_penetrating_male maledom monster orange_penis papyrus papyrus_(undertale) papysans penetration penis sans sans_(undertale) seme_papyrus sex short_playtime skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom socks stand_and_carry_position third-party_edit thrusting top_papyrus uke_sans undead undertale undertale_(series) video_game_character video_games white_background yaoi 1_intersex 1boy 2020s 2021 2d 2d_(artwork) abosinsin backwards_hat bad_id bad_twitter_id big_dom big_dom_small_sub big_penis bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_clitoris blue_glans blush cakes_(deltarune) cap cap'n_(deltarune) clitoris darkner deltarune deltarune_chapter_2 digital_media_(artwork) dominant dominant_male dominant_pov duo edit edited english_text gloves grabbing_leg grabbing_wrist hat humanoid humanoid_robot inactive_account intersex intersex_penetrated k_k larger_male larger_penetrating larger_penetrating_smaller leg_grab male male/intersex male/maleherm male_penetrating male_penetrating_intersex male_pov maledom maleherm multiple_images penetrating_pov penetrator_pov penis penis_in_pussy pov pussy receiving_pov robot robot_humanoid robotic_penis size_difference small_sub small_sub_big_dom smaller_intersex smaller_penetrated smaller_sub smaller_sub_bigger_dom spoken_heart submissive submissive_intersex submissive_pov taker_pov tear text third-party_edit thrusting thrusting_into_pussy twitter_username undertale_(series) vaginal vaginal_penetration vaginal_sex video_game_character video_games white_background wrist_grab yellow_eyes 1_intersex 1boy 2020s 2021 2d 2d_(artwork) abosinsin backwards_hat bad_id bad_twitter_id big_dom big_dom_small_sub big_penis bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_clitoris blue_glans blush cakes_(deltarune) cap cap'n_(deltarune) clitoris darkner deltarune deltarune_chapter_2 digital_media_(artwork) dominant dominant_male dominant_pov duo edit edited english_text gloves grabbing_leg grabbing_wrist hat humanoid humanoid_robot inactive_account intersex intersex_penetrated k_k larger_male larger_penetrating larger_penetrating_smaller leg_grab male male/intersex male/maleherm male_penetrating male_penetrating_intersex male_pov maledom maleherm multiple_images penetrating_pov penetrator_pov penis penis_in_pussy pov pussy receiving_pov robot robot_humanoid robotic_penis size_difference small_sub small_sub_big_dom smaller_intersex smaller_penetrated smaller_sub smaller_sub_bigger_dom spoken_heart submissive submissive_intersex submissive_pov taker_pov tear text third-party_edit thrusting thrusting_into_pussy twitter_username undertale_(series) vaginal vaginal_penetration vaginal_sex video_game_character video_games white_background wrist_grab yellow_eyes 1_intersex 1boy 2020s 2021 2d 2d_(artwork) abosinsin backwards_hat bad_id bad_twitter_id big_dom big_dom_small_sub big_penis bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_clitoris blue_glans blush cakes_(deltarune) cap cap'n_(deltarune) clitoris darkner deltarune deltarune_chapter_2 digital_media_(artwork) dominant_pov duo english_text gloves grabbing_leg grabbing_wrist hat humanoid humanoid_robot inactive_account intersex intersex_penetrated k_k larger_male larger_penetrating larger_penetrating_smaller leg_grab male male/intersex male/maleherm male_penetrating male_penetrating_intersex male_pov maleherm penetrating_pov penetrator_pov penis penis_in_pussy pov pussy robot robot_humanoid robotic_penis size_difference small_sub small_sub_big_dom smaller_intersex smaller_penetrated smaller_sub smaller_sub_bigger_dom solo_focus spoken_heart submissive_intersex tear text thrusting thrusting_into_pussy twitter_username undertale_(series) unseen_character vaginal vaginal_penetration vaginal_sex video_game_character video_games white_background wrist_grab yellow_eyes 1boy 2020s 2021 2d 2d_(artwork) abosinsin bad_id bad_twitter_id cakes_(deltarune) cap'n_(deltarune) darkner deltarune deltarune_chapter_2 digital_media_(artwork) dominant dominant_male duo english_text humanoid humanoid_robot inactive_account k_k male male_focus maledom pov receiving_pov robot robot_humanoid solo_focus submissive submissive_pov taker_pov text undertale_(series) unseen_character video_game_character video_games white_background yellow_eyes 2020s 2021 2d 2d_(artwork) 3boys abosinsin bad_id bad_twitter_id blush blush_lines cakes_(deltarune) cap'n_(deltarune) darkner deltarune deltarune_chapter_2 digital_media_(artwork) drooling english_text heart-shaped_pupils heart_eyes humanoid inactive_account k_k male male_only robot sketch solo_focus suggestive suggestive_look sweet_(deltarune) text trio twitter_username undertale_(series) video_game_character video_games white_background yellow_eyes 1cuntboy 2020s 2021 2boys 2d 2d_(artwork) abosinsin bad_id bad_twitter_id cakes_(deltarune) cap'n_(deltarune) cuntboy darkner deltarune deltarune_chapter_2 digital_media_(artwork) humanoid humanoid_robot inactive_account k_k male male/cuntboy penis robot robot_humanoid robotic_penis sex sweet_(deltarune) threesome undertale_(series) video_game_character video_games white_background yaoi 2020s 2d 2d_(artwork) 3boys abosinsin aroused bad_id bad_twitter_id cakes_(deltarune) cap'n_(deltarune) deltarune deltarune_chapter_2 digital_media_(artwork) english_text gay grabbing_face hand_on_another's_face hand_on_face heart-shaped_pupils heart_eyes horny horny_male inactive_account k_k larger_male male male_only questionable_consent robot smaller_male sweat sweet_(deltarune) talking_to_another text tongue_out trio twitter_username undertale_(series) video_game_character video_games white_background yaoi 2020s 2021 2boys 2d 2d_(artwork) abosinsin bad_id bad_twitter_id blush_lines cakes_(deltarune) cap'n_(deltarune) darkner deltarune deltarune_chapter_2 digital_media_(artwork) drooling duo english_text gay heart heart-shaped_pupils heart_eyes horny horny_male implied_orgasm inactive_account k_k male male/male male_only musical_note musical_notes questionable_consent robot sweat talking_to_another text undertale_(series) upper_body video_game_character video_games white_background yaoi 1boy 2020s 2021 2d 2d_(artwork) abosinsin bad_id bad_twitter_id blush cakes_(deltarune) clothed commission commission_art crotch_rub deltarune deltarune_chapter_2 digital_media_(artwork) headphones heart inactive_account k_k masturbation musical_note musical_notes robot sitting sketch solo tears touching_crotch trembling trembling_legs twitter_username undertale_(series) video_game_character video_games white_background 1:1 1:1_aspect_ratio 1boy 2020s 2022 2d 2d_(artwork) ? abosinsin apron bad_id bad_twitter_id bara character_name digital_media_(artwork) eyebrow_raise fire_elemental grillby grillby_(undertale) hand_behind_head hand_in_pocket head_tilt inactive_account male male_only muscular muscular_male pants sketch solo solo_male spoken_question_mark tilted_head undertale undertale_(series) video_game_character video_games white_background 1boy 2010s 2015 2d 2d_(artwork) animated_skeleton apron bad_id bad_tumblr_id digital_media_(artwork) frying_pan inactive_account male male_only monochrome monster naked_apron noxiousaberration one_eye_closed partially_nude sans sans_(undertale) simple_background skeleton solo solo_male spatula text_on_apron tumblr undead undertale undertale_(series) video_game_character video_games 2010s 2015 2boys 2d 2d_(artwork) animated_skeleton anon anonymous anonymous_male artist_name bad_id bad_tumblr_id blue_background blue_eye blue_tongue bottom_sans clothed cum cum_on_face cum_on_tongue digital_media_(artwork) ectotongue faceless_male fellatio gay genitals glowing_eye inactive_account jacket licking licking_penis male male/male monster multiple_views noxiousaberration oral penis sans sans_(undertale) sex simple_background skeleton solo solo_focus submissive submissive_male sweat tongue tumblr uke_sans undead undertale undertale_(series) unseen_male_face upper_body video_game_character video_games yaoi 2010s 2015 2d 2d_(artwork) animated_skeleton artist_name bad_id bad_tumblr_id blue_background blue_tongue bottom_sans chain chain_leash chains collar digital_media_(artwork) ectotongue inactive_account male monster noxiousaberration sans sans_(undertale) simple_background skeleton submissive submissive_male tongue tongue_out tumblr uke_sans undead undertale undertale_(series) upper_body video_game_character video_games 2010s 2015 2d 2d_(artwork) animated_skeleton bad_id bad_tumblr_id blue_background bottom_sans collar collar_and_leash digital_media_(artwork) english_text inactive_account leash leash_and_collar male monster naked noxiousaberration nude sans sans_(undertale) simple_background skeleton submissive submissive_male text tumblr uke_sans undead undertale undertale_(series) upper_body video_game_character video_games 1boy 2010s 2015 2d 2d_(artwork) animated_skeleton artist_name bad_id bad_tumblr_id balls blue_background blue_blush blue_eye blue_penis blue_testicles blue_tongue blush bottom_sans bound_arms bound_wrists chain chain_leash chains collar cowboy_shot digital_media_(artwork) drooling ectopenis ectotongue glowing_eye inactive_account male male_only malesub monster naked noxiousaberration nude penis sans sans_(undertale) simple_background skeleton solo solo_male submissive submissive_male sweat testicles tied_up tied_wrists tongue tongue_out tumblr uke_sans undead undertale undertale_(series) video_game_character video_games 2020s 2021 2boys 2d 2d_(artwork) 2males abosinsin anal animated_skeleton bad_id bad_twitter_id big_penis bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_penis blue_tongue blush boots bottom_on_top bottom_sans brother brother/brother brother_and_brother brother_penetrating_brother brothers clothed clothed_sex digital_media_(artwork) duo ectopenis ectotongue edit edited erect_penis erect_while_penetrated erection fontcest gay grabbing_tongue hand_on_another's_shoulder hooded_jacket hoodie inactive_account incest jacket larger_male larger_penetrating larger_penetrating_smaller line_art lineart looking_pleasured male male/male male_only male_penetrated male_penetrating male_penetrating_male moaning monster orange_blush orange_penis overstimulation papyrus papyrus_(font) papyrus_(undertale) papysans partially_colored penetration penis pleasure_face sans sans_(undertale) seme_papyrus service_top sex sex_through_clothes sex_through_clothing size_difference skeleton smaller_male smaller_penetrated smooth_penis tears tears_of_pleasure text third-party_edit tongue tongue_out top_papyrus twitter_username uke_sans undead undertale undertale_(series) veiny_penis video_game_character video_games x-ray yaoi 1boy 2010s 2016 2d 2d_(artwork) alternate_costume animated_skeleton armwear bad_id bad_tumblr_id blue_blush blue_body blue_penis blue_tongue blush bunny_ears bunnysuit crossdressing crouching digital_media_(artwork) ectobody ectopenis ectotongue high_heels inactive_account male male_only monster noxiousaberration penis sans sans_(undertale) seducing seductive simple_background skeleton solo solo_male squatting stockings sweat thighhighs tongue tongue_out tumblr undead undertale undertale_(series) video_game_character video_games 1boy 2010s 2016 2d 2d_(artwork) alternate_costume animated_skeleton armwear bad_id bad_tumblr_id blue_blush blue_body blush bottle bunny_ears bunnysuit cowboy_shot crossdressing digital_media_(artwork) ectobody glass hand_on_hip inactive_account male male_only monster noxiousaberration platter sans sans_(undertale) simple_background skeleton solo solo_male stockings sweat thighhighs tray tumblr undead undertale undertale_(series) video_game_character video_games wine_bottle wine_glass 1boy 2010s 2016 2d 2d_(artwork) animated_skeleton bad_id bad_tumblr_id blue_tentacles blue_tongue bottom_sans bound bound_arms bound_legs bound_wrists completely_naked completely_nude digital_media_(artwork) ectotongue inactive_account legs_held_open male male_only monster naked noxiousaberration nude one_eye_closed sans sans_(undertale) simple_background skeleton solo tentacle tentacle_on_male tentacle_sex tentacles_around_arms tentacles_around_legs tentacles_around_wrists tentacles_on_male tongue tongue_out tumblr uke_sans undead undertale undertale_(series) video_game_character video_games 1boy 2010s 2016 2d 2d_(artwork) animated_skeleton bad_id bad_tumblr_id blue_eye blue_tentacles bottom_sans bound bound_arms bound_legs bound_wrists completely_naked completely_nude digital_media_(artwork) dubious_consent inactive_account legs_held_open male male_only monster naked noxiousaberration nude one_eye_closed sans sans_(undertale) simple_background skeleton solo tentacle tentacle_on_male tentacles_around_arms tentacles_around_legs tentacles_around_wrists tentacles_on_male tumblr uke_sans undead undertale undertale_(series) video_game_character video_games 1boy 2010s 2016 2d 2d_(artwork) alternate_costume animated_skeleton armwear bad_id bad_tumblr_id bare_shoulders black_armwear black_legwear black_stockings black_thighhighs cowboy_shot crossdressing digital_media_(artwork) inactive_account maid_outfit maid_uniform male male_only monster noxiousaberration one_eye_closed sans sans_(undertale) shrug simple_background skeleton smile smiling smiling_at_viewer solo solo_male stockings thighhighs tumblr undead undertale undertale_(series) video_game_character video_games white_background 2010s 2015 2boys 2d 2d_(artwork) 2males animated_skeleton bad_id bad_tumblr_id big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_background blue_penis bottom_sans brother brother/brother brother_and_brother brother_penetrating_brother brothers clothed clothed/nude digital_media_(artwork) duo ectopenis fontcest gay grabbing_from_behind grabbing_mouth grabbing_tongue inactive_account incest larger_male larger_penetrating larger_penetrating_smaller male male/male male_only male_penetrated male_penetrating male_penetrating_male monster noxiousaberration nude orange_penis papyrus papyrus_(undertale) papysans penis sans sans_(undertale) seme_papyrus skeleton small_sub small_sub_big_dom smaller_male smaller_penetrated smaller_sub smaller_sub_bigger_dom solo_focus top_papyrus tumblr uke_sans undead undertale undertale_(series) unseen_male_face video_game_character video_games yaoi 1boy 1cuntboy 2020s 2021 2d 2d_(artwork) abosinsin animated_skeleton ass_spanking bad_id bad_twitter_id blue_blush blue_eyes blue_hoodie blue_jacket blue_tongue blush bodily_fluids bottom_sans bottomless brother brother/brother brother_and_brother brothers butt_spanking cuntboy cuntboy_focus cuntboysub digital_media_(artwork) dominant dominant_male duo ectoplasm ectopussy english_text fluids fontcest gloves grabbing_sheets gripping_sheets hand heart-shaped_pupils heart_eyes hooded_jacket hoodie inactive_account incest jacket kneeling looking_back male maledom monster papyrus papyrus_(undertale) papysans pink_socks punishment pussy red_gloves sans sans_(undertale) seme_papyrus skeleton socks solo_focus spank_marks spanking spanking_ass spanking_butt submissive submissive_cuntboy sweat text top_papyrus twitter_username uke_sans undead undertale undertale_(series) unseen_male unseen_male_face video_game_character video_games visible_breath white_background yaoi >:o 2020s 2021 2d 2d_(artwork) abosinsin anger_vein angry animated_skeleton apron bad_id bad_twitter_id big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_male blue_blush blue_hoodie blue_jacket blue_tongue blush bottom_sans brothers cussing digital_media_(artwork) duo english_text fontcest gloves grabbing_another's_chin grabbing_face hooded_jacket hoodie implied_incest inactive_account indoors jacket larger_male male monster orange_apron papyrus papyrus_(undertale) papysans profanity red_gloves red_sweater sans sans_(undertale) seme_papyrus skeleton small_sub small_sub_big_dom smaller_sub smaller_sub_bigger_dom swearing sweat sweater text top_papyrus twitter_username uke_sans undead undertale undertale_(series) video_game_character video_games yaoi 1girl 1girl absurd_res alternate_breast_size bad_id bad_twitter_id bat_hair_ornament black_shirt blush breasts cardigan cross cross_print gabriel_dropout hair_ornament hair_rings high_res huge_breasts inactive_account jakko kneel long_sleeves looking_at_viewer plaid plaid_skirt purple_eyes red_hair red_skirt satanichia_kurumizawa_mcdowell shirt skirt 2_girls 2d 2d_(artwork) 2girls bad_id bad_twitter_id digital_media_(artwork) duo eye_patch eyepatch female/female female_focus female_only female_pov female_pubic_hair fish inactive_account licking_pussy marine monochrome partially_colored ponytail pov pubic_hair pussylicking solo_focus undertale undertale_(series) undyne video_game_character video_games xmatsukisinsx yellow_eyes yuri 2020s 2022 2boys 2d 2d_(artwork) abosinsin anal anal_penetration anal_sex animated_skeleton arms_grab bad_id bad_twitter_id big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller black_legwear blue_hoodie blue_penis blush bodily_fluids bottom_sans bouncing_penis brother brother/brother brother_and_brother brother_penetrating_brother brothers clothed cussing dialogue digital_media_(artwork) dirty_talk duo ectopenis english_text erect_while_penetrated fluids fontcest from_behind_position fully_clothed gloves grabbing_from_behind head_out_of_frame holding_arms hoodie inactive_account incest kneeling larger_dom larger_male larger_penetrating larger_penetrating_smaller leaking_cum legwear male male/male male_only male_out_of_frame male_penetrated male_penetrating male_penetrating_male maledom moan moaning monster motion_lines onomatopoeia papyrus papyrus_(undertale) papysans penetration penetration_from_behind penetration_through_clothes penis penis_through_clothing pounding prison_guard_position profanity red_gloves sans sans_(undertale) seme_papyrus sex sex_from_behind sex_through_clothes sex_through_clothing size_difference skeleton small_sub small_sub_big_dom smaller_male smaller_penetrated smaller_sub smooth_penis swearing sweat text text_bubble thought_bubble thrusting top_papyrus uke_sans undead undertale undertale_(series) unseen_male_face video_game_character video_games white_background yaoi 1:1 1:1_aspect_ratio 2020s 2021 2d 2d_(artwork) abosinsin anger_vein angry animated_skeleton bad_id bad_twitter_id blush bottom_sans brother brother/brother brother_and_brother brothers digital_media_(artwork) duo english_text fontcest from_behind grabbing_hand grabbing_hands hand_on_hand hands_grab imminent_sex implied_sex inactive_account incest male male/male male_only monochrome monster papyrus papyrus_(font) papyrus_(undertale) papysans sans sans_(undertale) seme_papyrus skeleton sweat sweating text thought_bubble top_papyrus uke_sans undead undertale undertale_(series) video_game_character video_games 1:1 1:1_aspect_ratio 2020s 2021 2d 2d_(artwork) abosinsin anger_vein angry animated_skeleton arms_crossed bad_id bad_twitter_id blue_blush blush comic crossed_arms digital_media_(artwork) fontcest grin inactive_account joke male male_only monochrome monster papyrus papyrus_(font) papyrus_(undertale) papysans sans sans_(undertale) skeleton smile smug undead undertale undertale_(series) video_game_character video_games 2020s 2022 2boys 2d 2d_(artwork) abosinsin animated_skeleton bad_id bad_twitter_id big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_penis blush bottom_sans commission_art dialogue digital_media_(artwork) duo ectopenis ectoplasm edging english_text face_grab gaster gaster_(undertale) gay gay_sex grabbing_face grabbing_penis holding_face inactive_account larger_penetrating male male/male male_only male_penetrated male_penetrating male_penetrating_male monster orgasm_denial partially_colored penetration penis penis_grab purple_blush purple_penis sans sans_(undertale) sanster seme_gaster sitting skeleton small_sub small_sub_big_dom smaller_male smaller_penetrated smaller_sub smaller_sub_bigger_dom text third-party_source top_gaster twitter_username uke_sans undead undertale undertale_(series) video_game_character video_games white_background yaoi 2020s 2022 2boys 2d 2d_(artwork) abosinsin after_deepthroat after_fellatio after_oral animated_skeleton bad_id bad_twitter_id big_cock big_penis blue_blush blue_tongue blush bottom_sans brother brother/brother brother_and_brother brothers clothed coughing digital_media_(artwork) duo ectopenis edit edited english_text fontcest grabbing_head grabbing_penis hoodie huge_cock huge_penis inactive_account incest male male/male male_only male_out_of_frame monster onomatopoeia orange_penis papyrus papyrus_(undertale) papysans penis sans sans_(undertale) seme_papyrus skeleton solo_focus speech_bubble text text_bubble thought_bubble tongue tongue_out top_papyrus uke_sans undead undertale undertale_(series) unseen_male unseen_male_face veiny_penis video_game_character video_games 2020s 2022 2boys 2d 2d_(artwork) abosinsin after_deepthroat after_fellatio after_oral animated_skeleton bad_id bad_twitter_id big_penis blue_blush blue_saliva blue_tongue blush bodily_fluids bottom_sans brother brother/brother brother_and_brother brothers clothed coughing covered_in_cum cum_on_face deepthroat dialogue digital_media_(artwork) dizzy_eyes duo ectopenis ectoplasm english_text excessive_cum face_out_of_frame fellatio fontcest gag gay grabbing_head grabbing_penis head_grab hoodie huge_cock huge_penis inactive_account incest large_penis licking licking_penis long_tongue male male/male male_only male_out_of_frame monster onomatopoeia oral orange_cum orange_penis papyrus papyrus_(undertale) papysans penis penis_grab saliva saliva_on_penis sans sans_(undertale) seme_papyrus semen_on_face skeleton solo_focus speech_bubble sucking_penis text text_bubble thick_cum thought_bubble throbbing_penis tongue tongue_on_penis tongue_out too_much_cum top_papyrus twitter_username uke_sans undead undertale undertale_(series) unseen_male unseen_male_face veiny_penis video_game_character video_games white_background yaoi 1:1 1:1_aspect_ratio 2020s 2022 2boys 2d 2d_(artwork) abosinsin animated_skeleton bad_id bad_twitter_id big_penis blue_blush blue_tongue blush bodily_fluids bone bottom_sans brother brother/brother brother_and_brother brothers can't_see_the_haters cant_see_the_haters digital_media_(artwork) duo ectopenis english_text erect_penis erection fontcest genital_fluids genitals heart high_res huge_cock huge_penis humanoid inactive_account incest large_penis male male/male male_only male_out_of_frame monster orange_penis papyrus papyrus_(undertale) papysans penis penis_on_face penis_over_eyes precum sans sans_(undertale) seme_papyrus sibling skeleton text these_aren't_my_glasses throbbing throbbing_penis tongue tongue_out top_papyrus twitter_username uke_sans undead undertale undertale_(series) veiny_penis video_game_character video_games white_background yaoi 1:1 1:1_aspect_ratio 1boy 1cuntboy 2020s 2022 2d 2d_(artwork) abosinsin animated_skeleton bad_id bad_twitter_id big_penis bodily_fluids_from_pussy bodily_fluids_on_face bottom_sans brother brothers cum_leaking cum_leaking_out_of_pussy cum_on_face cuntboy cuntboy_focus cuntboysub digital_media_(artwork) dirty_talk dominant_male duo ectopenis ectopussy english_text face_out_of_frame fontcest heart inactive_account incest leaking_cum legs_apart legs_spread male male/cuntboy male_out_of_frame maledom muffled oral_sex papyrus papyrus_(undertale) papysans penis penis_in_mouth penis_out punishment pussy pussy_through_clothing sans sans_(undertale) seme_papyrus shaking sitting skeleton sketch solo_focus spread_legs submissive_cuntboy swallowing sweat text top_papyrus twitter_username uke_sans undead undertale undertale_(series) unseen_male_face video_game_character video_games wet_penis white_background 2020s 2022 2boys 2d 2d_(artwork) abosinsin animated_skeleton bad_id bad_twitter_id bite_mark biting bottom_sans bottomless commission commission_art deltarune digital_media_(artwork) ectopenis ectotongue fangs gay grabbing_sheets gripping_sheets handjob imp inactive_account jevil_(deltarune) looking_at_another male male/male male_only penis pillow pillows sans sans_(undertale) skeleton tail text tongue tongue_out topless topless_male twitter_username uke_sans undead undertale undertale_(series) video_game_character video_games visible_breath yaoi