FURVERT!

anal anal_penetration animal_genitalia animal_penis anthro back_muscles balls black_balls black_penis bodily_fluids brown_body cum derp_eyes duo equid equine equine_balls equine_genitalia equine_penis equine_tail erection flared_penis genital_fluids genitals hooves horse intraspecies male male/male male_penetrated male_penetrating male_penetrating_male mammal morticus muscular muscular_anthro muscular_male nude penetration penis sex simple_background tail unsigned