Rule 34 Dev - 1boy 2010s 2016 2d 2d_(artwork) animated_skeleton biting_clothes biting_shirt blue_hoodie blue_jacket bottom_sans digital_media_(artwork) ecto-tiddy english_text fangs grabbing_sheets gripping_sheets hand_towards_viewer hooded_jacket hoodie inviting jacket lying_on_back male male_only malesub monster on_back reaching_out reaching_towards_viewer sans sans_(undertale) shirt_up skeleton solo solo_male submissive submissive_male sweat text uke_sans undead undertale undertale_(series) video_games|1024900