Oops, it doesn't look like 'suh dude day' is a national day..

Other days

stud

Stud Day
pick me

Pick Me Day
prosecco

Prosecco Day
lumpy rug

Lumpy Rug Day
buddy

Buddy Day
mean girls

Mean Girls Day
boy friend

Boy Friend Day
bounce

Bounce Day
ponytail

Ponytail Day
believe

Believe Day