Cheeseburger Bobby’s, a fast-casual gourmet burger concept focused on made-to-order burgers, is celebrating National Twinkie Day on Tuesday, April 6 with the debut of its newest shake, the Twinkie Milkshake.

In honor of the new menu item and national observance, Cheeseburger Bobby’s is asking excited customers to showcase their most creative and dynamic “Twinkie Twinkie Shake” dance moves for the chance to win Cheeseburger Bobby’s milkshakes for a year. In addition, Cheeseburger Bobby’s will give away the first 50 Twinkie Milkshakes served at each location.

To enter, contestants must submit a video of their Twinkie Twinkie Shake to the official Cheeseburger Bobby’s Facebook Page. Interested contestants are asked to perform their dance moves to any readily available version of the song “Hippy Hippy Shake” or a song of their choice. Video submissions must be no longer than two minutes and entered by March 31, 2010. Participants must be age 21 or older. For contest complete rules please visit the company’s Web site.

Cheeseburger Bobby’s will announce the grand prize winner of its Twinkie Twinkie Shake Contest on April 6, as part of the National Twinkie Day celebration and debut of the new milkshake. The grand prize winner will receive a free Cheeseburger Bobby’s milkshake a week for a year.

“Cheeseburger Bobby’s has always focused on serving delicious, nostalgic fare. As such, the Twinkie Milkshake was deemed a perfect fit to our menu and our customers’ expectations,” says Richard Stoll, co-founder and vice president of Cheeseburger Bobby’s.

“We cannot wait to view the creative video entries and reward the customer with the best Twinkie Twinkie Shake in America with free shakes for a year.”