420, 4:20, or 4/20 (pronounced four-twenty) is slang in cannabis culture for the consumption of cannabis, especially smoking cannabis around the time 4:20 p.m. and also refers to cannabis-oriented celebrations that take place annually on April 20 (which is 4/20 in U.S. form).
== Origins ==
In 1971, five high school students – Steve Capper, Dave Reddix, Jeffrey Noel, Larry Schwartz, and Mark Gravich – 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 1971 plan to search for an abandoned...