Redditor u/orchidhibiscus, who seems to have since deleted his account, claimed to be a manager at a UK McDonalds and set out to answer some questions people had about fast food production.
Then someone dropped the big question:
If you are unaware, the idea of the secret menu was popularized by the west coast burger chain In-N-Out. They have a slew of items that can be made from mixing and matching other items on the existing menu and just decided to go ahead and let it be its own thing.
In that particular AMA, only two of those items were defined. Users seemed to agree that the Land, Air, and Sea burger probably consisted of beef, chicken and fish patties. And the McGangbang is not just a classy name, rather it's a Jr. Chicken sandwich encased within a double cheezeburger.
Actually, our customers are pretty clever when it comes to customizing their orders with our menu items, so you may have seen some of their creations online. But we have no official secret menu of our own.