420 is april 20 the day to smoke your best bud, or national pot smoking day. It all started with a bunch of teenagers called the Waldos.
stoners mental math 4+20 = 420.... lets go smoke.
by mhorittochelln June 24, 2005
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Originated in San Rafael high school in 1971 by a group of stoners named the "Waldos"... they would use the code 420 to say that they would meet at 4:20 to smoke...also assoctiated with April 20th...my name is henry hennessy and my father smoke pot and everything elses...his birthday is April 19th and he graduated high school in 1971.
by Henry Hennessy February 13, 2004
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Code for homicide. From CSI, but is the actual police code used by the Las Vegas Metropolitan Police Department.
419 = Dead Body
419A = Drowned Person
420 = Homicide
420A = Murder/Non-negligent homicide
420B = Manslaughter
420Z = Attempted homicide
421 = Sick or injured
421A = Mentally ill person
422 = Sick or injured Officer



by Alfie The Horndog June 10, 2007
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The national rememberance day to which we all acknowledge that the best joys in life are through the use of killing yourself.
I will smoke that on 420
by Cy O'Hare March 10, 2017
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My dog weighs 420 grammes
by 0b1010101 November 10, 2017
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A day where people gather to celebrate and consumer cannabis, better known as marijuana. The term derived from a group of teenagers at a high school in San Rafael, California back in 1971, who would meet after school at 4:20 p.m. to smoke marijuana at the Louis Pasteur statue.
Happy 420!!
by HaraShogunate April 21, 2009
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