Rule 34 Dev - 1futa 2013 animated autofellatio blonde_hair cutie_mark dedline derpy_hooves english_text equine fellatio feral friendship_is_magic furry futa_only futanari grey_fur hair horse intersex lying masturbation my_little_pony on_back oral pegasus penis plain_background pony solo text upside-down white_background wings yellow_eyes|1566347632