Rule 34 Dev - 2012 cheating clothing cutie_mark ear_piercing equine female friendship_is_magic from_behind hat horn horse infidelity magnum_(mlp) male my_little_pony night_light_(mlp) pearl_(mlp) penetration penis piercing plain_background pony ragingsemi sex shirt straight twilight_velvet_(mlp) two_tone_hair unicorn white_background|1278802224