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safetytrance

2010s 2016 2boys 2d 2d_(artwork) animated_skeleton anon anonymous anonymous_male blue_tongue bone bottom_sans digital_media_(artwork) disembodied_penis duo genitals grey_background licking licking_penis male male/male male_only nubs oral penis safetytrance sans sans_(undertale) sex simple_background skeleton solid_color_background solo_focus text third-party_source tongue uke_sans undead undertale undertale_(series) unseen_character unseen_male_face video_games yaoi
2010s 2016 2boys 2d 2d_(artwork) animated_skeleton anon anonymous anonymous_male blue_tongue bone bottom_sans digital_media_(artwork) disembodied_penis duo genitals grey_background licking licking_penis male male/male male_only nubs oral penis safetytrance sans sans_(undertale) sex simple_background skeleton solid_color_background solo_focus text third-party_source tongue uke_sans undead undertale undertale_(series) unseen_character unseen_male_face video_games yaoi
2010s 2016 2boys 2d animated_skeleton bigger_dom bigger_dom_smaller_sub bigger_male black_body black_penis black_tentacles blue_blush blue_body blue_penis blue_tongue blush bottom_sans bottomless clothed digital_media drooling ectobody ectopenis ectoplasm goo grabbing_chin grabbing_face grabbing_own_penis gradient_background grey_background half-closed_eyes holding_own_penis hooded_jacket hoodie jacket larger_male male male/male male_only maledom malesub partially_clothed partially_nude penis precum safetytrance sans_(undertale) sanster skeleton small_sub small_sub_big_dom smaller_male smaller_sub smaller_sub_bigger_dom sweat tentacle tentacle_on_male tentacle_under_clothes tentacles tentacles_around_arms tentacles_around_legs tentacles_on_male tongue tongue_out uke_sans undead undertale undertale_(series) video_games w.d._gaster yaoi
2010s 2016 2boys 2d animated_skeleton bigger_dom bigger_dom_smaller_sub bigger_male black_body black_penis black_tentacles blue_blush blue_body blue_penis blue_tongue blush bottom_sans bottomless clothed digital_media drooling ectobody ectopenis ectoplasm goo grabbing_chin grabbing_face grabbing_own_penis gradient_background grey_background half-closed_eyes holding_own_penis hooded_jacket hoodie jacket larger_male male male/male male_only maledom malesub partially_clothed partially_nude penis precum safetytrance sans_(undertale) sanster skeleton small_sub small_sub_big_dom smaller_male smaller_sub smaller_sub_bigger_dom sweat tentacle tentacle_on_male tentacle_under_clothes tentacles tentacles_around_arms tentacles_around_legs tentacles_on_male tongue tongue_out uke_sans undead undertale undertale_(series) video_games w.d._gaster yaoi
2010s 2016 animated_skeleton back_view bottom_sans bound_ankles bound_wrists completely_naked completely_nude kneel monochrome nude sacrum_lacing safetytrance sans sans_(undertale) skeleton solo sweat tied_ankles tied_up tied_wrists uke_sans undead undertale undertale_(series)
2010s 2016 animated_skeleton back_view bottom_sans bound_ankles bound_wrists completely_naked completely_nude kneel monochrome nude sacrum_lacing safetytrance sans sans_(undertale) skeleton solo sweat tied_ankles tied_up tied_wrists uke_sans undead undertale undertale_(series)