I didn't even know that 4/20 was celebrated, what it stood for or was aware that that day was in any way unique to a whole group of people until 2012 when #420 was trending on Twitter and I was so shocked by all this going on while I was entirely oblivious of it, I started a thread about it. lol.
http://www.yorkietalk.com/forums/off...nce-420-a.html