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1:1 2019 anthro armpit_hair asinus azathura balljob balls beard big_balls big_penis bodily_fluids body_hair brown_penis chest_hair chest_tuft crouching donkey duo equid equine erection facial_hair frottage fur genital_fluids genitals hairy_balls hi_res humanoid_genitalia humanoid_penis hybrid male male/male mammal marcus_(azathura)nipples open_mouth penile penis penis_size_difference penises_touching precum pubes scruffy sex size_difference spread_legs spreading tuft vein veiny_penis zebra