Ever wonder where the term 420 came from? Well, wonder no more!

A group of five San Rafael (California) High School friends known as the Waldos -- by virtue of their chosen hangout spot, a wall outside the school where they would meet every day at 4:20 PM to indulge in cannabis -- coined the term in 1971.

The Waldos never envisioned that pot smokers the world over would celebrate each April 20 as a result of their daily gathering. The day has managed to become something of a national holiday in the face of official condemnation.