Celebrate Pi Day next month by having a piece of pie! Pie Day is so named because March 14, 3/14, represents the first three digits of pi.
This funny shirt is great for math geeks -- and great to save for Pi Day next year. The spoof slogan here is "I Can't Keep Calm I'm Irrational".
Pi is proven to be an irrational number (it can't be expressed as the ratio of two integers). Of course, irrational may also describe a person who is nonsensical, which makes this spoof t-shirt design funny on multiple levels.
The crown icon is replaced with the symbol for pi which is the Greek letter π. The design is done in all black and is shown here on a unisex American Apparel basic tee.