420

It is a code word used to refer to the socially accepted hour of the day to consume cannabis around 4:20 p.m. (or a.m.) and April 20th (4/20 in the U.S. form) is also celebrated as cannabis’s global holiday. The term originates from San Rafael High School in California (1971) among a group of cannabis-smoking teenagers called the 'Waldos,' who would meet at the campus statue of Louis Pasteur at 4:20 p.m.

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