Xbooru - 2020s 2022 2boys 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 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 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 white background yaoi | 1017476

This post has child posts. Child posts are often subsequent pages of a doujinshi, or minor variations of the parent post.

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2020s 2022 2boys 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 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 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 white_background yaoi

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