Oops, it doesn't look like 'be a dumbass day' is a national day..

Other days

Self Care Day

Nae Nae Day

Lumpy Rug Day

Promposal Day

Ask Out Your Crush Day

Stud Day

Kale Day

Donate Your Hair Day

Appreciate Yaself A Lil Extra Day

African Immigrant And Refugee Hiv And Hep Awareness Day