This Friday is 4/20, and thus a stoner holiday. Wikipedia explains the origin of this odd toking tradition:
In 1971, Steve Capper, Dave Reddix, Jeffrey Noel, Larry Schwartz, and Mark Gravich, five high school students in San Rafael, California, calling themselves the Waldos because “their chosen hang-out spot was a wall outside the school”, used the term in connection with a fall 1971 plan to search for an abandoned cannabis crop that they had learned about, based on a treasure map made by the grower. The Waldos designated the Louis Pasteur statue on the grounds of San Rafael High School …