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

Other days

hoodie

Hoodie Day
kiss a ginger

Kiss A Ginger Day
self care

Self Care Day
cuddle up

Cuddle Up Day
blanket fort

Blanket Fort Day
law

Law Day
offer

Offer Day
one

One Day
polyamory

Polyamory Day
boba

Boba Day