What "Happy Friday!" means

The Complete and Total Loser has noticed over the past few years that people have begun to say "Happy Friday!" to others on that day. Here's the subtext of it:

Your job is so meaningless and awful, your life so drab, that this upcoming little break you get after five days of poorly compensated, unpleasant labor, during which you will try to numb the pain of your existence with alcohol, television, sleep, food, shallow gatherings and mindless consumerism, is worth noting and even though with each passing year people get meaner and more selfish, I am saying this trite, stupid phrase, accompanied with a fake smile, so I can lie to myself and pretend that I have remained kind.