It would have been quite something if you did find one, since that would've cemented the idea into users minds that, even if you aren't looking for someone else's brain wallet, you might accidentally stumble upon it like this discussion, which is a bit of a outlier no doubt, but I could see someone thinking "that's pretty random", of course its not, anything you derive from something you've read is in fact, not random, but I can see how someone might come to that conclusion.