Rule 34 Dev - 2013 animal_genitalia animal_penis blush disembodied_penis duo equine equine_penis erection fellatio female feral fluttershy_(mlp) friendship_is_magic fur green_eyes hair horsecock male mammal my_little_pony nude oral oral_penetration pegasus penetration penis pink_hair ponchuzn sex simple_background straight wings yellow_fur|2225257672