Heavenscent, silly....
pony porn: it's about people who like to "be" ponies, aka to be ridden, wear.. er... saddles and such, to whinny and do all things pony-like. And about people who like to ride them, and treat them as ponies. And no, I don't know how they can get a kick out of it, I just saw a documentary.
Imagine Rice writing porn about that, weird or sick, don't know which=)
Although it's weird how their saddles and such ornaments all looked they're made of latex... High boots and all=)
Veeery pony-like.