rule 34 2017 animal genitalia animal penis balls blue fur correct artstyle cutie mark duo equine equine penis feathered wings feathers female feral flash sentry friendship is magic fur highres horn cock indoors male mammal multicolored hair my little pony open mouth orange fur pegasus penetration penis purple eyes pussy sex shutterflyeqd simple background straight tongue tongue out trixie mlp two tone hair unicorn vaginal penetration wings 2255748