Awful, awful. Okay, actually the story was pretty good and quite humorous. And for such a sacrilegious book, it certainly got parts of the Bible and Christian views correct (like how super-fancy cars aid the devil in distracting man from Grod).
But there was foul language on every single page. I can get over a little bit of that, but it bothers me when people (or authors) use it so prodigiously. And even if you aren't someone offended by foul language, it really loses its potency when it's used so often as a replacement for 'very' or 'bad'.