8
There is a belief that it is a code used by the police to describe an offence in progress, saying something like "We have a 4:20 in progress", meaning someone or people are smoking pot. Generally, potheads or stoners will refer to smoking pot at any time as 4:20. 4:20 on April 20th is the ultimate 4:20 of the year.
Hey dude, what time is it? 4:20 man.
(the time could be 9:45, but since they are smoking a joint it is 4:20)
by Mark B January 28, 2005
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9
D = 4th # in the alphabet,
T = 20th # in the alphabet,
4:20 = Dope Time
Its 4:20, time to blaze!
by KillaDro December 22, 2005
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10
Time to get high. Very, very high.
"Later on that there day
My homey, Dr. Dre
came through with a gangk of Tanqueray
And a fat ass J
Of some bubonic chronic that made me choke (shit)
This ain't no joke
I had to back up off of it and sit my cup down
Tanqueray and chronic, yeah I'm fucked up now"-Snoop
by Jonny Blaze April 15, 2004
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11
The nationally accepted time or date on which the majority of occasional or chronic marijuana users choose to get high from the smoke of cannabis leaves.

Although it is apparent that 4:20 may indeed have originated from H.P. Lovecraft, in addition to many other contrasting theories, it has nevertheless been apparent to me that the first two digits of the number are 42, a number which clearly derives its significance from Douglas Addams in The Hitchhiker's Guide to the Galaxy, in which he claims the number to be "the answer to Life, the Universe, and Everything."

Nevertheless, the true meaning of 4:20 differs from person, and perhaps it is best that everyone may have his or her own personal meaning of the national holiday.
Person 1: "You know, I really wonder...Why is it that we all choose 4/20 at 4:20 to get high?"
Person 2: "You know, I'm really too stoned to care right now."
Person 1: "Yeah. Now what were we just talking about?"
by Uexdrukl November 06, 2007
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12
5 days from now (April 20). Smoke a lot of weed this day.
or the time on the clock am or pm you should be sparkin something up at this time everyday
I'm gonna smoke an ounce when I wake up on 4:20 I'm gonna be chopped as fuck
by 420in4days April 15, 2008
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13
cron day, smokey the pot day, the time of day hippies in the 60s used to smoke up so they used the time of day as code so they could talk infront of people about it, and my BIRTHDAY :D
april 20 = every1 should get high
4.20pm = time to smoke a reefer
by n333m August 23, 2004
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14
A term to mean to toke up. It orriginly came from a group of High Schoolers in the 70's who called themselves the Waldos. It took root and spread to what it is now-a-days.

It did not have anything to do with penal code.
"It's 4:20. Wanna' toke?"
"Sure"
by (None) January 12, 2005
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