It’s 4/20 day.

If you’re not aware, 4/20 is something of an international holiday, celebrating marijuana - a nod to the fact that “420” is slang for pot, weed, Mary Jane…whatever you want to call it.

Cannabis is now legal — for adults — in many parts of the United States. Recreational use is legal in 11 states; 33 states have legalized medical use of mar…