cannabis slang number 420 https://en.wikipedia.org/wiki/420_(cannabis_culture) https://www.wikidata.org/wiki/Q748539 4/20 420 blaze it 4:20 In 1971, five high school students in San Rafael, California, used the term "4:20" in connection with a plan to search for an abandoned cannabis crop, based on a treasure map made by the grower. Calling themselves the Waldos, because their typical hang-out spot "was a wall outside the school", the five students (Steve Capper, Dave Reddix, Jeffrey Noel, Larry Schwartz, and Mark Gravich) designated the Louis Pasteur statue on the grounds of San Rafael High School as their meeting place, and 4:20 pm as their meeting time. The Waldos referred to this plan with the phrase "4:20 Louis". After several failed attempts to find the crop, the group eventually shortened their phrase to "4:20", which ultimately evolved into a code-word the teens used to refer to consuming cannabis. Slang term in cannabis culture referring to smoking around the time 4:20 PM (16:20), cannabis-oriented celebrations that take place on April 20 (4/20 in United States date form), or generally marijuana-friendly nature. four-twenty the cannabis number the hashish number the weed number Fantabulosa: A Dictionary of Polari and Gay Slang