By Lucas Grindley

Originally published on Advocate.com October 02 2012 5:35 PM ET

It turns out that even the final Oreo in its campaign of 100 clever designs includes a gay reference.

Already the 100th anniversary ad campaign, called "The Daily Twist," had created headlines by including a rainbow-colored cookie as an ode to gay pride. Then it launched designs to celebrate gay artists and even a tribute to Project Runway.

The much-anticipated last image, just released today, celebrates the anniversary of the first high five. Few realize the high five was very likely invented by a gay man.

Los Angeles Dodger Glenn Burke was the first baseball player to come out as gay, doing so after leaving the major leagues. And during a game on October 2, 1977, versus the Houston Astros, he thrust his hand in the air to greet a teammate rounding the bases for a home run.

Burke later explained that it just "seemed like the thing to do."

RELATED: More about the gay history of the high five.

RELATED: A gallery of the "other" gay Oreos from the 100th anniversary ad campaign.