Rule 34 Dev - animal_genitalia animal_penis arm_warmers armwear balls big_balls big_penis chest_tuft clothing equine_genitalia equine_penis erection feral footwear fur genitals grey_background grey_body grey_fur grey_hair hair half-closed_eyes hooves legwear long_penis male masturbation mohawk multicolored_hair narrowed_eyes open_mouth penile penile_masturbation penis simple_background socks solo stripes thick_penis tongue tongue_out tuft two_tone_hair underhoof vein lengthen hasbro my_little_pony fan_character equid equine mammal zebra 2015 hi_res|2974069490