It's the unofficial end to summer, or at least that's what Dairy Queen is calling it.

To celebrate the unofficial holiday, Dairy Queen is giving out free small Oreo frappe's to customers between 2 and 5 pm.

DQ says the giveaway is a nod to baristas and specialty coffee servers.

For those who aren't coffee buffs one of the "DQ–ristas" explains what the beverage is.

"So the frap has our arctic rush ice cream, soft serve and then reconstituted coffee and that's all blended together with the Oreo chunks, where an iced coffee is creamer and our reconstituted coffee with ice," says DQ-rista Hanna Karevold.

If you missed the giveaway you can pick up a small frappe from DQ for just over $3.