Why do people celebrate Hitler's birthday by smoking pot, again? I never got that.
It doesn't have anything to do with the date, you do know that right? Maybe you're just joking but I can't tell.....
Anyways, a group of teenagers in San Rafael,CA used to either smoke weed at 4:20 everyday or search for a hidden pot grow. And from that it spread and the time 4:20 became sacred among cannabis enthusiasts. And the date 4/20 as well even though it really doesn't have anything special associated with it.