The Friday before Memorial Day when employees who are too lame to take a vacation day, pretend they are really working.
Said employees are actually passing the time catching up on their favorite tv shows online, organizing the apps on their iPhone, purging their Facebook friend list, counting how many staples fit in the stapler, taking a 2 hour lunch, etc.
Anna: "I'm going to go grab a quick lunch and eat at my desk, do you want me to get you anything?"
Max: "No thanks, I'm going to go check out the new Harry Potter movie at lunch."
Anna: "We have a huge project due next week, aren't you working on it?"
Max: "Nope. It's Fake Work Friday."
Anna: "Cool, I'll come with."