Can't. Stop. Laughing. 

The idea of having 'secret' or unlisted menu items at fast-food chains isn't unheard of. These items can not be found on the menu but if you order them specifically by name, you'll find out they do, in fact, exist. 

McDonalds is no exception: Next time you go to Mickey D's ask for the...

McGangBang

I kid you not, this interestingly named item is a hybrid burger that is made up of both a McChicken and a Double Cheeseburger.

IF you order this, PLEASE don't forget to put the 'Mc' in there. I can only imagine what ordering a 'gangbang' could result in... *Shutters*