Rule 34 Dev - 1boy 2021 animated_skeleton anterior_nasal_aperture balls belly black_bottomwear black_clothing black_shorts blue_clothing blue_glans blue_topwear bodily_fluids bone bottomwear clothed clothing erection foreskin genitals glans grin hi_res humanoid humanoid_genitalia humanoid_penis looking_at_viewer male male_only navel nipples not_furry one_eye_closed partially_clothed partially_retracted_foreskin penis pink_slippers sans shorts shorts_down skeleton smile solo standing sweat tbid teeth topwear undead undertale undertale_(series) video_games white_balls white_body white_penis xtbidx|5824757192