FURVERT!

9:16 abs animal_genitalia animal_penis anthro balls biceps big_balls black_balls black_body black_fur black_hair blacky_the_stallion equid equine equine_genitalia equine_penis erection flared_penis fur genitals grey_body grey_fur hair hi_res hooves horse krideg male mammal medial_ring muscular muscular_anthro muscular_male pecs penis plant purple_eyes sheath solo stretching vein veiny_penis waterfall watermark white_body white_fur