Oops, it doesn't look like 'name your poison name your poison day' is a national day..

Other days

boyfriend

Boyfriend Day
artists

Artists Day
singles

Singles Day
lisp

Lisp Day
stress awareness

Stress Awareness Day
raise awerness of zeus

Raise Awerness Of Zeus Day
mean girls

Mean Girls Day
eat what you want

Eat What You Want Day
azonto is acceptable

Azonto Is Acceptable Day
chocolate milkshake

Chocolate Milkshake Day