There's a national day for just about every food and/or drink. Oreo cookies claim March 6 as National Oreo Day -- and, as is tradition on these sorts of food-based holidays, that means freebies.

This year the brand isn't giving away milk and cookies, but instead promoting its new Oreo chocolate bar. Just head to this page and fill out a form and, assuming you're one of the first million to sign up, you'll receive a coupon for a free bar later this month.

The snack features a layer of Oreo cookies in between layers of cream and coated in Milka chocolate.

Sure, it's not the instant gratification we're used to on food holidays, but think of it instead as a way to keep the spirit of National Oreo Day alive long after your initial celebrations are over.

This national day dates back to 1912, when the first Oreo was produced at a Chelsea Market bakery in Manhattan. Since that time, more than 500 billion Oreos have been sold -- with an average of 95 million Oreos selling every day in over 100 countries.

Oreo candy bars are one of the newest additions to the Oreo universe, but Oreos have been used in everything from breakfast cereal to doughnuts to beer.

There's no better time to try this candy bar than when you can get one free, right?!