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

Other days

ruby

Ruby Day
mean girls

Mean Girls Day
eat what you want

Eat What You Want Day
lisp

Lisp Day
polyamory

Polyamory Day
nae nae

Nae Nae Day
tell a fairytale

Tell A Fairytale Day
cursing

Cursing Day
bow tie

Bow Tie Day
brow

Brow Day