rule 34 2023 animal genitalia animal penis balls beard bodily fluids cape clothing crown curled horn dark penis darkened genitalia digital media artwork equid equine equine genitalia equine penis eyebrows facial hair fangs feral friendship is magic fur genital fluids genitals green sclera grey body grey fur grey hair grey hooves grey mane grey tail hair hasbro headgear hi res hooves horn kelkessel king sombra mlp lying male male only mammal mane medial ring my little pony penis precum red eyes smile solo tail teeth unicorn 8213804