So far the majority of you are incorrect.

420's origin IS known.

the term 420 originated at San Rafael High School, in 1971, among a group of about a dozen pot-smoking wiseacres who called themselves the Waldos, who are now pushing 50. The term was shorthand for the time of day the group would meet, at the campus statue of Louis Pasteur, to smoke pot. Intent on developing their own discreet language, they made 420 code for a time to get high, and its use spread among members of an entire generation.

So there ya go, someone's parents out there invented the term 4/20.
Yo is about time for the 420 man
by Jah Promise June 15, 2016
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It means only one thing, the birthdate of the Glorious Leader of the Everlasting Reich, Herr Adolph Hitler. Der Fuehrer is remembered as both an inspirational leader and a heck of a nice guy. Not many people realize, however, that he was also an accomplished painter. He could paint an entire room in 30 minutes. Two coats.
Es ist 420! Heute ist HitlersGeburtstag! Sieg Heil! Sieg Heil! Haben Sie etwas dagegen, wenn ich rauche?
by Roland Van Owen February 21, 2006
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National Pot Smoking Day.

Valencia Serena Grimes' birthday: 4/20/1987

Hitler's Birthday.

France declared war in on Austria in 1882.
Ay, yo, Ange...you smokin that good green wit grimey, today? It's her birthday, ya know?--Max

"Of, course!!!! It's 420!!"--Ange
by Valencia Grimes April 19, 2006
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time to smoke ur dank.
dude its 420 lets smoke our reefer, its the dankist shit on the block.
by 4our2wentyb0yz July 30, 2003
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Most people don't know this. Like the dumb shit that said something about a bunch of pot smokers wanting a code language. Bull shit. On April 20 of 1937 marijuana was outlawed by the Marijuana Tax Act of 1937. Stoners smoke on that day just to be ass holes because it was outlawed on that day. Its a rebellion more than anything else.
420 is when I smoke weed.
by excicutioner April 27, 2015
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A cheat. Derived from,THE INDIAN PENAL CODE 420: Cheating and dishonestly inducing delivery of property
Whoever cheats and thereby dishonestly induces the person deceived to deliver any property to any person, or to make, alter or destroy the whole or any part of a valuable security, or anything which is signed or sealed, and which is capable of being converted into a valuable security, shall be punished with imprisonment of either description for a term which may extend to seven years, and shall also be liable to fine.
watch out for this guy, he is a big 420.
by crystalr May 04, 2006
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