Rule 34 Dev - 1boy animal_genitalia animal_penis animal_transformation anus ass balls big_balls big_butt big_muscles big_penis bottle equid equine equine_penis fasttrack37d flaccid genital_piercing genitals green_eyes hi_res hooves horse huge_cock human male male_only mammal medial_ring muscular penis penis_piercing piercing potion_bottle puffy_anus satyr solo thick_thighs transformation|5663735144