Oops, it doesn't look like 'locker room talk day' is a national day..

Other days

tulip

Tulip Day
unicorn

Unicorn Day
gum

Gum Day
martini

Martini Day
ride the wind

Ride The Wind Day
latina equal pay

Latina Equal Pay Day
bow tie

Bow Tie Day
lumpy rug

Lumpy Rug Day
pumpkin

Pumpkin Day
slime

Slime Day