Burger King has been doing some pretty off-the-wall type of things for shock value lately, from introducing hot-dogs to even releasing a burrito. Now, for the holiday season, Burger King has announced that it will offer a free whopper to anyone who has an unwanted Christmas gift they would like to exchange. Although the Whopper Exchange is only available at select locations (in Miami, London, and Rio), this type of gift exchange is an interesting way to get people into Burger King stores. Why does Burger King want Christmas gifts you ask? Well, they will be donating the unwanted to gifts to charity. So bring your sweaters, socks, and other unwanted gifts to a participating Burger King location and get your whopper on.