Oops, it doesn't look like 'Forget The Lyrics day' is a national day..

Other days

polyamory

Polyamory Day
pumpkin

Pumpkin Day
ponytail

Ponytail Day
pampering

Pampering Day
cursing

Cursing Day
bounce

Bounce Day
lumpy rug

Lumpy Rug Day
ormille

Ormille Day
bow tie

Bow Tie Day
self care

Self Care Day