A day set aside to be nice to a friend who is feeling down, observed on the third Friday in October.
Etymology: derived from "Renaissance," a program in which students with good grades receive gifts from local merchants; + (French) "fry," because the event which inspired Renaissance Fryday took place at a McDonalds that gave free French fries to students in this program; + "day." "Fry" and "day" were combined into one word to resemble the word "Friday," since said event occurred on a Friday (10/15/1993).
Happy Renaissance Friday! I'm sorry your girlfriend just broke up with you. Let's go get some burgers.