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

Other days

law

Law Day
blanket fort

Blanket Fort Day
lisp

Lisp Day
eat what you want

Eat What You Want Day
boy friend

Boy Friend Day
fiancee

Fiancee Day
stud

Stud Day
martini

Martini Day
gum

Gum Day
comfy

Comfy Day