It's an ancient natural defense system, a construct almost as old as the site itself. It was designed by The Great Sujoy during the Kdawg Wars, and it dwells at the fathomless depths of the site's core. Periodically, it rises to the surface in the form of a user, and interacts with the denizens that populate it.
Fully agreed, out of the all the shit songs made in recent years Happy really stands out. The worst thing about this so called "song" is how much praise it gets even being nominated for oscar lol. Overplayed on radio,used as soundtrack in stupid movies and featuring countless "funny" clips thats just an apogee of mental degradation.