50
420 means national weed smoking day, also it is a number between 419 421.
Man 1: Hey dude, its 420 today!
Man 2: Uh what's 420?
Man 1: The fourth month twentieth day.
Man 2: What? April 20th is 420?
Man 1: Ya its national weed smoking day.
by The real Samuel June 02, 2012
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51
420...april 20th, a day of enjoyment and pure euphoria. This is National Pot Smoking day, but it's not recognized by the government. The term was once used to just be a incognito way to make toke plans. But incognito it is no more...either way, "celebrate we will for life is short but sweet for certain"
time: "it's 4:20, spark it up!"
date: "its 4-20, pack it up, roll it up, spark it up...just blaze!"
by daytripper March 09, 2003
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52
Adolf Hitler's birthday. Therefore some hardcore white supremeist had tattoos with that number.

it is also Pot day, how unfortunate.
or conviently confusing.

Are they a pothead or a skinhead?
Hay nigga, watch out for that one, gotta 420 tat and looks like he got a white hoodie wida point to it
by Dick tastes like poop October 29, 2013
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53
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
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54
The optimal vaporization temperature for marijuana (in degrees Farenheit) when utilizing a Digital Volcano Vaporizer.
Dude #1: Hey Dude, Let's get baked at 350.
Dude #2: Forget it dude - I like to get the job done at 420!
by TheAnonymous1 May 23, 2008
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55
Of its many def. Me and my friends define it like this: 4/20-almost like a holiday for stoners when they can just get high all day n' night. Also when everybody is sold out, so u betta buy ya shit before 4/20!
Aye man, it's close to 4/20 we betta stock up if ya know what I mean.
-Yah fo sho.
by Unknown July 25, 2003
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56
april,20th..the day that colombine got shot up..
the trench coat mafia shot up the school on 420. lets all get blazed.
by the mighty mighty s.a.c September 25, 2004
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