Jacob is not thrilled about having to share his birthday with pi. But in this playful picture book celebrating the magical number, a tasty Pi Day surprise shows him that, any way you slice it, pi makes the best birthday cake! Today is March 14th, Jacob’s birthday!! But no one seems to remember that it's his special day. "Happy... Pi Day!" his friends greet him. All through the day of pi-filled activities at school--from singing the pi song, to measuring the circumference and diameter of a pizza pie--no one says a single word about Jacob's birthday. That stupid number. It stole his birthday!! Luckily for him, there might just be an extra sweet surprise waiting for him after school... From the hilarious team behind Gravity Is Bringing Me Down comes a delightful picture book that introduces readers to the diverse and delicious applications of pi in the world all around us.