You might get away with denying climate change, election results and, well, science in general, but you must accept the fact that the Greek letter Pi represents a constant in math regarding the ratio of the circumference of a circle to its diameter. Pi is approximately 3.14159265359 and is shortened to 3.14.
(Get it Einstein? 3/14, March 14th?).
And although celebrated by our revered math and science nerds everywhere, consumer culture has morphed the celebration of mathematics into a reason to increase revenue by discounting pies, both fruit and pizza.
How cool is that?