Burger King just started a new promotion yesterday where you can get a Whopper for just ONE CENT. 

The only catch is . . . you have to order it while you're AT McDonald's!  

If you want to get in on this deal, download the Burger King app, then go within 600 feet of a McDonald's and order a Whopper on the app and then it'll give you directions to the nearest BK where you can pick it up.

The offer is good now through next Wednesday.