The closest I can get is Avril Lavigne's cultural appropriation of Japanese culture for her Hello Kitty video. That's more for this community, as the cultural insensitivity spoils the wank.

As for "ponyfuckers," I'm reminded of a woman from Usenet who called herself Hoofprints and whose "fans" called her "Goofprints." They stopped when they realized that she had drunk herself crazy and was on her way to drinking herself to death. At that point, they stopped poking her. It was no longer funny; it was cruel.