For some fast food patrons, the regular menu at their favorite restaurant can get a little boring. Enter the secret menu -- often over-the-top variations that have to be seen to be believed.
This off-menu item from Arby's is layered from the bottom up with chicken tenders, roast turkey, ham and swiss cheese. But the fixin's don't stop there. Stacked on top of that is brisket, corned beef, Angus steak and cheddar cheese. Crispy bacon completes the sandwich.
Here's Twitter user @Chris_Guy1's picture of this massive sandwich.
One of the most popular off-menu items from Chipotle is its Quesarito.
This behemoth, photographed by CoupleInTheKitchen, is a mash-up of a quesadilla and a burrito, where the former serves as the latter's shell.
As of 2015, Chipotle charges an extra $3.50 for this secret-menu upgrade.
McDonald's: Land, Sea and Air Burger
The biggest burger on the list combines three of McDonald's most-popular sandwiches into one beast of a meal. The Land, Sea and Air Burger consists of a Big Mac, Filet-O-Fish and a McChicken. And if consumers are feeling even more gluttonous, some like to add fries.
Twitter-er @DJPhilGrainger recently shared a photo.
Wendy's: Meat Cube (or Grand Slam Burger)
Wendy's is known for their square-shaped burgers, but this is off-menu meal takes it to towering levels. The Meat Cube, or Grand Slam Burger, is a secret-menu item that adds even more beef patties to Wendy's 3/4 pound burger.
Recently @SlowlbutShirley decided to go full-cube by adding an extra three beef patties, for a total of six.
Shake Shack: Peanut Butter-and-Bacon Shackburger
Shake Shack's Peanut Butter-and-Bacon ShackBurger is one of the more uncommon burger combinations on the list.
This secret menu item adds peanut butter sauce and bacon to the original Shackburger. Here's @MikeCips' photo of the off-menu meal.
In-N-Out: Animal Style Burger
Unless West Coasters have been living under a rock, they know all about In-N-Out's "Not-So-Secret" menu. But for the uninitiated, there's the Animal Style Burger.
Along with the usual toppings, Animal Style adds pickles, even more secret spread, and grilled onions, while the patties are grilled with mustard on them to give the burger an extra kick.
The photo above was taken by In-N-Out enthusiast and Instagram user Myra_Perez.
This burger isn't the only item that can be Animal Styled at In-N-Out ...
In-N-Out: Animal Style Fries
For many fans, no In-N-Out meal is complete without the fast food joint's Animal Style Fries.
With the addition of melted cheese, grilled onions and secret spread sauce, In-N-Out's off-menu fries are a huge hit.
The picture above was shared by RobertosFoodAdventure on Instagram.
In-N-Out: The Flying Dutchman
Sometimes less is more, like with In-N-Out's Flying Dutchman burger.
The Flying Dutchman consists of two beef patties with cheese in the middle. Take that, carbs!
In-N-Out: Neopolitan Shake
Here Twitter user @DaysWithDave goes completely off menu by ordering the Flying Dutchman, Animal Style Fries and a Neapolitan milkshake at In-N-Out.
The secret-menu Neapolitan milkshake combines chocolate, vanilla and strawberry ice cream.
Chipotle's Burritodilla is another combination of a burrito and quesadilla, but it's not so massive as the restaurant's Quesarito.
The off-menu meal takes another secret-menu item (quesadilla) and adds about half the ingredients from a burrito to create this hybrid.
Twitter user @Jcolton31 shared a picture of the secret-menu item prior to devouring it.
Starbucks: Dirty Chai Latte
Sure, Starbucks fans can ask for an extra shot of espresso, and that's not exactly a secret. But the fact that this fix has a name? That baristas recognize? That elevates this to a secret-menu item.
McDonald's: McDouble + McChicken
Although this McDonald's off-menu burger has a name we can't repeat, we can tell you this hybrid sandwich brings together a McDouble and a McChicken.
Twitter user @Petekeefe tweeted out the photo above, along with the secret-menu item's nutritional facts.
Jamba Juice: Pink Star
Jamba Juice has a multitude of smoothie options, but one of its most popular drinks is an off-the-menu item.
The Pink Star smoothie was created to taste like a pink Starburst. The secret-menu recipe includes lemonade, strawberries, raspberry sherbert and soy milk.
Taco Bell: The Hulk
Not many Taco Bell consumers know that they can add guacamole to pretty much any burrito on the menu.
Adding guac to a bean-and-cheese burrito will automatically transform that meal into the Hulk, a popular secret-menu treat.
Burger King: Suicide Burger (or Quad Stacker)
This secret-menu burger isn't for the weak at heart. Seriously. The Suicide Burger is packed to the brim with four beef patties, four slices of cheese, bacon, and BK's secret "stacker" sauce.
Twitter user @RussellN007 survived to share a photo of the monster meat stack.
Chick-Fil-A: Chicken Quesadilla
This chicken quesadilla from Chick-Fil-A is a super-secret-menu item because it's not always available at all locations. But it's worth a shot anyway.
Twitter user @Marylandgirlie recently ordered CFA's char-broiled chicken and melted cheese in a large tortilla.
Jamba Juice: Butterfinger Smoothie
This Jamba Juice drink isn't a typical smoothie. The "Butterfinger" smoothie is more of a dessert than a healthy alternative.
The secret-menu "Butterfinger" smoothie includes carrot juice, frozen yogurt, chocolate and peanut butter.
Five Guys: Patty Melt
Here's a unique take on a Five Guys' grilled cheese sandwich. Twitter-er @HaniRaspaghettiadded a beef patty to the sandwich and-voila-he's got himself a secret-menu Patty Melt.