Burger King is letting you decide how you want its latest promo. For a limited time, mix and match two sandwiches for $5. Choose from the Original Chicken, Big Fish, Big King, Chicken Big King and/or Extra Long BBQ Cheeseburger sandwiches. Of course, you must purchase two to get the discount. (If not, you’ll pay full price. With some of the sandwiches costing around $4, why not buy two?) At this price, if you’re really hungry, you might be able to eat two — just skip the fries and soda. Or, better yet, treat a friend.