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

Other days

bubble bath

Bubble Bath Day
boy friend

Boy Friend Day
prosecco

Prosecco Day
ruby

Ruby Day
pick me

Pick Me Day
ponytail

Ponytail Day
cat girl

Cat Girl Day
fiancee

Fiancee Day
healing

Healing Day
girl friend

Girl Friend Day