Oops, it doesn't look like 'get yo pussy ate day' is a national day..

Other days

boba

Boba Day
eat what you want

Eat What You Want Day
gum

Gum Day
tulip

Tulip Day
boy friend

Boy Friend Day
pampering

Pampering Day
ruby

Ruby Day
unicorn

Unicorn Day
pumpkin

Pumpkin Day
blanket fort

Blanket Fort Day