Pie charts take yummy and yukky center stage in this hilarious holiday collection of cards. Wedge-shaped and oblong pieces penciled in red, green, orange, yellow, white and candy cane stripe demonstrate, as humorous visual aids with seasonal jokey scientific precision: where Santa Claus fits into the picture, the conjunction of "Ho Ho Ho," what happens when winter meets Christmas, how epic holiday fails form, and the percentage of people who eat healthy during Xmas compared to those who love pumpkin pie. Colorful, educational, erudite and even slightly edible, these glorious greetings are gear-wheeled for anyone who enjoys a good laugh and lesson during the Yuletide.