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Happy Pi Day! Nerds On Twitter Celebrate Mathematical Constant

03/14/2013 10:08 EDT | Updated 05/14/2013 05:12 EDT

Happy Pi Day! Like a pop quiz in math class, Pi Day (in the U.S. it's 3/14) sneaks up on us every year.

Math nerds and number aficionados are celebrating everyone's favourite irrational number (sorry e) and mathematical constant.

On Twitter, that online refuge of nerds and cat fans, everyone from Sesame Street to fake Darth Vaders are paying tribute to pi.

If you're not mathematically inclined March 14 is at least an excuse to think about pie. As if you needed an excuse to think about pie!

Pi Day!