1. Pot Smokers Holiday

2. Code Term for "Let's go Burn One" Aka. "It's Doobie:30"

3. The day my Husband & I married in Humboldt County California. 4-20-02. Yes, we are big fans of tetrahydrocannabinol and the legalization of medicinal cannabis. See N.O.R.M.L.
Husband: Holy shit, it's 4:20 on 4/20....we better go burn one!!!

Wife: Then let's fuck like pigs whilst burning a fatty since it's our anniversary!!!

Hsband: Aww Man, I love you!
by Sassy420_grl April 21, 2004
the best day ever!

April 4
Damn 420 is the best day ever
by smokith the ganja February 25, 2008
a day when kids ditch school. usually to smoke, drink, have sex, and "party". this 420 there was almost a columbine thing at my old junior high. kids are dumb on 420.
"Hey! are you smoking with us on 420. we are getting so stoned!"
by im_just_me April 22, 2005
1) It was mistakenly reported that there were 420 atoms in one molecule of the tetrahydrocannabinol, and later found to be incorrect, but not until the drug culture had adopted the number as a code for marijuana.

source - High Times magazine
Hey it's 4:19, you got a minute?
by jrh5356 April 18, 2005
back in 1971, out in cali, a few potheads starting using 420 as a code for the time they were gonna go smoke...now, people sometimes refer to pot as "420"...other people say 4:20 is the perfect time to smoke...for me, any time is the perfect time to smoke! anyways, 4:20 is kinda this secret among stoners, all u gotta say is "hey man it's 4:20" and any respectable pothead will know what you mean. also, april 20th has became somewhat of a national stoner day...for me, i blaze everyday at 4:20 am and at 4:20 pm, cuz any excuse to smoke, i'm gonna take it...on april 20th, u gotta blaze from 12 am to 12 pm cuz it's a holiday. the count down til the 20th is on. yeah, so it all started with a few kids out in cali...but now, 4:20 is smoking time every day and april 20th, well that's the day to get fucked up, even more fucked up than usual
Hey it's 4:20 (let's go smoke)
Hey, today's April 20th (we're gonna get so fucked up)
by light it up April 14, 2005
Yes, it's true that the "Waldos" were some of the first people to coin the phrase 420, but, before the "Waldos" there was a band called, The Grateful Dead.

Supposedly, on April 20th (some year between 65' and 75') the band was trying to buy some weed. They put together all the money they had on their persons at the time, and it amounted to $420. On April 20th, The Grateful Dead bought $420 dollars of weed, and after they realized the coincidence, they decided that in light of the "herbal" phenomenon, they would smoke before any/every show, at 4:20 PM because most Dead shows started around 5ish. During the show, the Dead would entertain their audiences with stories about what happened before the show, or just any stories that they had. They would usually include any crazy "Trips" or "Thoughts" they had while they were high. Normally, in the middle of someone's story, another band member would chime in and say "Yeah, but you weren't feeling that way until 420". Once the hippies caught on, it was just a spiral Up from there.
Hippie A: Did you go to the show last night, man?

Hippie B: Yeah man, we even smoked with Jerry at 420! It was fuckin' sweet man!
by Slater-the-fukn-hippie-man September 18, 2007
1. April 20th.

2. National pot smoking day (April 20th).

3. A 2 person racing sailboat made by Vanguard and used in the olympics.
1. It's 420

2. it's 420 do you know where your weed is?

3. "lets go 420ing" "do u have the weed?" "no, lets go sailing!"
by iz March 27, 2005

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