Rule 34 Dev - 1futa big_penis boxers bulge clothed clothing dirty_underwear erection erection_under_clothes fully_clothed futa_only futanari human monochrome musk musky_balls musky_cock nipples_visible_through_clothing penis sketch smell smelly smelly_balls smelly_cock solo stain stained_clothes stained_underwear standing sweat tenting water_noodle|5876778776