Interesting Correlations to GDP

I found a really interesting econometric paper via a blog I follow. It looks at one factor related to a country's GDP that is apparently pretty significant. I know most of you just zoned out, but you really should read the following excerpt from the paper's abstract:
This paper explores the link between economic development and penile length between 1960 and 1985. . . . The size of male organ is found to have an inverse U-shaped relationship with the level of GDP in 1985. It can alone explain over 15% of the variation in GDP. The GDP maximizing size is around 13.5 centimetres, and a collapse in economic development is identified as the size of male organ exceeds 16 centimetres. Economic growth between 1960 and 1985 is negatively associated with the size of male organ, and it alone explains 20% of the variation in GDP growth. With due reservations it is also found to be more important determinant of GDP growth than country's political regime type.
For those of you that didn't catch that, between 15% and 20% of the variation in GDP growth can be explained by the average size of the male population's sex organ. Not only that, the average size alone has a stronger correlation than the type of government in a given country. Converting to inches, the optimal size to maximize GDP is just over 5¼". Now you're probably thinking this is a joke. It's actually a serious econometric paper published by Tatu Westling of the University of Helsinki. You can read the whole thing here.