You Can Write Your Own Punch Lines

They can't possibly be more preposterous than the comments on Fark. According to Spiegel Online:

The commonly spouted wisdom that people only use 10 percent of their brain power may have been dismissed as a myth, but one French man seems to be managing fine with just a small fraction of his actual brain.

In fact the man, who works as a civil servant in southern France, has succeeded in living an entirely normal life despite a huge fluid-filled cavity taking up most of the space where his brain should be.