An expression used to describe the amazing power of thursday, how it is the best day of the week, and how this particular day possesses magical powers of good luck and happiness. A jubilation of the spirit, shouting HAPPY THURSDAY!
helps us all realize that the world is spectacular and amazing even on a normal day. It is often used as a means to get pumped after being tired after 3 long days of the week.
Depressed guy: the world is so evil and cruel, I hate all the wars and starvation...
Optimistic guy: don't worry cuz today is a new day, even through all the pain, be glad for what you have, and besides today is the best day of the week, HAPPY THURSDAY!