It's a Travesty Generator (http://www.jwz.org/dadadodo)!

I especially like the Markov chain ones. Once upon a time, long ago, I built a huge corpus of text - the Bible, the Qu'ran, the Bhagavad-Gita, some bizarre conspiracy theory stuff, a little bit of hatemongers' speeches... and fed the whole lot into a Markov chain-style travesty generator.

When I saw what had come out of it, I wiped the entire set from my hard drive. I was pretty sure I'd heard people preaching it before.