Come to the nerd side, there’s pi. In honor of the mathematical π holiday (representing the ratio of the circumference of a circle to its diameter, 3.14159) MET Back Bay‘s pastry chef, Paige Retus, will be whipping up a Key Lime Pi special and offering it to the pie-eating public for (you guessed it) $3.14. This Floridian masterpiece will only be available on Saturday, March 14th so be sure to book a table online here and save room for dessert.