The Definition of Pi

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You think Pi is too important to fool with those cutesy tees that play on the word and say things like "apple pi" and "cow pi." You want your pi, not pie, straight up with no chaser. You're a Pi purist and you don't care who knows it. This tee features a simple design and comes in three very serious colors: black, charcoal and navy blue. Wear it with a straight face on Pi Day.

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