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

Other days

martini

Martini Day
cuddle up

Cuddle Up Day
book

Book Day
boy friend

Boy Friend Day
latina equal pay

Latina Equal Pay Day
aloxolt

Aloxolt Day
lisp

Lisp Day
tulip

Tulip Day
bow tie

Bow Tie Day
lumpy rug

Lumpy Rug Day