Rule 34 Dev - 2015 animated blinking book bound chest_tuft equine fearingfun female friendship_is_magic fur hair horn mammal my_little_pony navel open_mouth penetration plain_background princess_twilight_sparkle_(mlp) purple_eyes purple_fur restrained saliva solo stomach_bulge tentacle tuft twilight_sparkle_(mlp) unicorn vaginal_penetration|1960842976