Rule 34 Dev - 3:4 5_fingers animal_genitalia animal_penis anthro balls biped blue_glow cocky equid equine equine_penis erection fingers genitals green_eyes heavy_balls hi_res hooves horse humanoid lad male male_only mammal medial_ring muscular muscular_anthro muscular_male nipples penis pony solo standing tattoo tida twinkle-sez|6074385624