sneaking past spam

This was the text-part of a spam I just received:

distinguish one bird from the other. By mistake he caught the
its craft. To eliminate the craftmanship you eliminate the
essentially the only aliens who can to be trusted by humans. They have blonde
being taught are affected. The basic drafting skills are still

I wonder how well Bayesian filtering really works when more and more spam content becomes this weird, almost Mark Leyner-style copy (not an insult to Mark, I’m a old fan of his humor), instead of being an actual communication.