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1boy 1cuntboy 2010s 2017 2d 2d_(artwork) animated_skeleton bad_id bad_tumblr_id bigger_dom bigger_dom_smaller_sub bigger_male blue_blush blue_clitoris blue_hoodie blue_jacket blue_pussy blush bottom_sans bottomless brother brother/brother brother_and_brother brothers clitoris clothed_male couch cuntboy cuntboy_focus cuntboysub digital_media_(artwork) dominant_male duo ectoplasm ectopussy fontcest gloves hooded_jacket hoodie imminent_penetration imminent_sex imminent_vaginal incest jacket larger_male legs_apart legs_spread male male/cuntboy maledom mmmemmo monster monster_boy on_couch on_sofa papyrus papyrus_(undertale) papysans pussy pussy_juice pussy_juice_drip red_gloves sans sans_(undertale) seme_papyrus sequence sequential sequential_art sequential_set shirt_lift shirt_up sibling_incest siblings sitting sitting_on_couch skeleton small_sub small_sub_big_dom smaller_cuntboy smaller_sub smaller_sub_bigger_dom socks socks_on sofa spread_legs spread_pussy submissive_cuntboy top_papyrus touching_pussy uke_sans undead undertale undertale_(series) unseen_male_face video_games yaoi

1boy 1cuntboy 2010s 2017 2d 2d_(artwork)animated_skeleton bad_id bad_tumblr_id bigger_dom bigger_dom_smaller_sub bigger_male blue_blush blue_clitoris blue_hoodie blue_jacket blue_pussy blush bottom_sans bottomless brother brother/brother brother_and_brother brothers clitoris clothed_male couch cuntboy cuntboy_focus cuntboysub digital_media_(artwork)dominant_male duo ectoplasm ectopussy fontcest gloves hooded_jacket hoodie imminent_penetration imminent_sex imminent_vaginal incest jacket larger_male legs_apart legs_spread male male/cuntboy maledom mmmemmo monster monster_boy on_couch on_sofa papyrus papyrus_(undertale)papysans pussy pussy_juice pussy_juice_drip red_gloves sans sans_(undertale)seme_papyrus sequence sequential sequential_art sequential_set shirt_lift shirt_up sibling_incest siblings sitting sitting_on_couch skeleton small_sub small_sub_big_dom smaller_cuntboy smaller_sub smaller_sub_bigger_dom socks socks_on sofa spread_legs spread_pussy submissive_cuntboy top_papyrus touching_pussy uke_sans undead undertale undertale_(series)unseen_male_face video_games yaoi

1boy 1cuntboy 2010s 2017 2d 2d_(artwork) animated_skeleton bad_id bad_tumblr_id bigger_dom bigger_dom_smaller_sub bigger_male blue_blush blue_clitoris blue_hoodie blue_jacket blue_pussy blush bottom_sans bottomless brother brother/brother brother_and_brother brothers clitoris clothed_male couch cuntboy cuntboy_focus cuntboysub digital_media_(artwork) dominant_male duo ectoplasm ectopussy fontcest gloves hooded_jacket hoodie imminent_penetration imminent_sex imminent_vaginal incest jacket larger_male legs_apart legs_spread male male/cuntboy maledom mmmemmo monster monster_boy on_couch on_sofa papyrus papyrus_(undertale) papysans pussy pussy_juice pussy_juice_drip red_gloves sans sans_(undertale) seme_papyrus sequence sequential sequential_art sequential_set shirt_lift shirt_up sibling_incest siblings sitting sitting_on_couch skeleton small_sub small_sub_big_dom smaller_cuntboy smaller_sub smaller_sub_bigger_dom socks socks_on sofa spread_legs spread_pussy submissive_cuntboy top_papyrus touching_pussy uke_sans undead undertale undertale_(series) unseen_male_face video_games yaoi

2010s 2017 2boys anal animated_skeleton bed_sheet bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_cum blue_hoodie blue_jacket blue_penis blush bottom_sans bottomless brother brother/brother brother_and_brother brother_penetrating_brother brothers closed_eyes clothed cum cum_on_face cum_on_self duo ectopenis fingers_interlocked fontcest from_front_position gay gay_sex gloves grabbing_sheets gripping_sheets hooded_jacket hoodie incest indoors interlocked_fingers intertwined_fingers intraspecies larger_male larger_penetrating larger_penetrating_smaller male male/male male_only male_penetrated male_penetrating male_penetrating_male missionary_position mmmemmo monster monster_boy orange_blush papyrus papyrus_(undertale) papysans penetration penis red_gloves sans sans_(undertale) seme_papyrus sequence sequential sequential_art sequential_set sex sibling_incest siblings skeleton small_sub small_sub_big_dom smaller_male smaller_penetrated smaller_sub smaller_sub_bigger_dom sweat tears top_papyrus uke_sans undead undertale undertale_(series) visible_breath yaoi

2010s 2017 2boys anal animated_skeleton bed_sheet bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_cum blue_hoodie blue_jacket blue_penis blush bottom_sans bottomless brother brother/brother brother_and_brother brother_penetrating_brother brothers closed_eyes clothed cum cum_on_face cum_on_self cum_while_penetrated cumshot duo ectopenis fingers_interlocked fontcest from_front_position gay gay_sex gloves grabbing_sheets gripping_sheets hooded_jacket hoodie incest indoors interlocked_fingers intertwined_fingers intraspecies larger_male larger_penetrating larger_penetrating_smaller male male/male male_only male_penetrated male_penetrating male_penetrating_male missionary_position mmmemmo monster monster_boy orange_blush papyrus papyrus_(undertale) papysans penetration penis red_gloves sans sans_(undertale) seme_papyrus sequence sequential sequential_art sequential_set sex sibling_incest siblings skeleton small_sub small_sub_big_dom smaller_male smaller_penetrated smaller_sub smaller_sub_bigger_dom sweat tears top_papyrus uke_sans undead undertale undertale_(series) visible_breath yaoi