Oops, it doesn't look like 'weed fail your drug test day' is a national day..

Other days

bow tie

Bow Tie Day
ruby

Ruby Day
lash

Lash Day
cursing

Cursing Day
brow

Brow Day
one

One Day
martini

Martini Day
hannah

Hannah Day
kiss a brunette

Kiss A Brunette Day
girl friend

Girl Friend Day