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

Other days

boyfriend

Boyfriend Day
martini

Martini Day
kiss a ginger

Kiss A Ginger Day
ponytail

Ponytail Day
bow tie

Bow Tie Day
cursing

Cursing Day
coffee

Coffee Day
self care

Self Care Day
lisp

Lisp Day
fiancee

Fiancee Day