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

Other days

nail polish

Nail Polish Day
healing

Healing Day
camera

Camera Day
gum

Gum Day
boy friend

Boy Friend Day
nae nae

Nae Nae Day
buddy

Buddy Day
lisp

Lisp Day
self care

Self Care Day
unicorn

Unicorn Day