420 is the police code for possession of marijuana. It also is Hitler's birthday as well as the day of the Columbine Shooting #420funfacts—
Scott Gergelis (@ScottyGergelis) April 19, 2012
Today potheads all over the country (except students at the University of Colorado, Boulder) will joyfully light up a joint to celebrate National Weed Day. But this day isn’t just about marijuana. It’s also the 13th anniversary of the Columbine massacre and the birthday of Adolf Hitler. Naturally, Twitter had much to say about all three events:
Update: Predictably, no one is happier today than rapper Wiz Khalifa.
Related: Some disturbed Twitter users are paying tribute to the Columbine killers.