Rule 34 Dev - 2boys abs absurd_res anatomically_correct anatomically_correct_penis animal_genitalia animal_penis anthro anthro_on_anthro balls black_mane blue_eyes bodily_fluids bondage bucephalus cum duo equid equine gay genital_fluids harness hi_res horse hufnaar male male/male male_only mammal mane penis spreader_bar submissive yaoi|3842414808