Due to popular demand, I've implemented a patch to dynamically convert all Wikipedia content into Pig Latin. Give it a try and let me know what you think: https://gerrit.wikimedia.org/r/#/c/280927/
Note that this implementation is language agnostic, but it works best with Latin scripts. For those of you looking for support for Pig Latin as a language variant, try Liangent's patch instead: https://gerrit.wikimedia.org/r/#/c/72053/
Cheers, Kaldari