Happy Pi Day!

Two friends joke during the Pie Eating Contest at the Loudoun County Fair. (Photo by Tracy A. Woodward/The Washington Post/Getty Images)

( The Washington Post / Washington Post/Getty Images / July 31, 2008 )

Two friends joke during the Pie Eating Contest at the Loudoun County Fair. (Photo by Tracy A. Woodward/The Washington Post/Getty Images)

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