Burger King Whoppers for a penny

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NBC News (NBC) - Burger King is offering a whopper of a deal..

Burger King is selling its iconic whopper for just a penny.. that's right, a penny.

It's part of a new BK promotion called the "Whopper Detour," to get customers to use the burger chain's re-launched app.

There's a catch though..to get the deal customers must place their order within 600' of a McDonald's.

The app will determine your location and then unlock the Whopper deal.

And once the order is placed, the app will lead customers to the closest Burger King.

The promotion is underway now through December 12th.