The McGangBang ranks up there in the holy pantheon of WTF. It's a sandwich made from a double cheeseburger and a McChicken sandwich — where you put an entire McChicken sandwich inside a double cheeseburger. It's a creative manipulation of existing menu items, and an exercise in frugality: taking two items off of the Dollar Menu and creating an entirely new sandwich for a total of $2.16. Truly, it's a sandwich that's more than the sum of its parts.