That Explains a Lot

I'd always suspected as much – in fact my wife and I have had a running joke about this for years – but it's kind of amazing to see this confirmed by an actual medical study. Dr. Richard Outil, a Mesa, AZ urologist, noticed something interesting about his patients' driving habits. It seemed that the most, er, well-endowed among them drove the smallest cars. The men with the smallest organs, on the other hand, tended to drive large SUVs and gas guzzlers.

Intrigued, Outil coordinated a study with colleagues in a dozen different countries and found similar results.  Their study has been peer-reviewed and published in the New England Journal of Medicine (PDF). "People may find this amusing," Outil conceded, "but this correlates with a large body of research on testosterone and aggression, as well as previous studies on SUV ownership."

Still, you should be careful what names you shout out at people in traffic. About a third of them are armed. Maybe some urologist should do a study on that.