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5.
A day on which idiot potheads around the world get together and celebrate the anniversary of Hitler's birth, Napolean's birth and the Columbine High School massacre.

Also known as 4/20.
"Yo man, it's April 20. Let's get baked"
"Sweet man! Heil Hitler!"
by edward doyle April 23, 2006
 
1.
National get high day.
The day we all go out, get high, and dance around in our underwear!
by mvoll212 April 20, 2005
 
2.
The best day in the world!
Hey, its 4:20, time to hoot!!!
by shelly April 18, 2005
 
3.
National Pot Smoker's Day
"Today is April 20, and you know what.. I'm gunna get HIGH as a Mutha FUcka!!!"
by Lis420 September 30, 2008
 
6.
its hitler's birthday dumbasses n if u go out n get high that day and celebrate you are a motherfucking neo nazi
hey its hitler's birthday
by niglet4lyf May 01, 2005