After being in the market for decades, it is expected that some businesses commit slight mistakes—and let's be honest, that happens with every single one of them.

So, it would come as no surprise if we would tell you that Burger King is one of those businesses, right?

The Florida-born restaurant has had some bumps along the way, and yes, we're talking about disgusting food they used to serve people all over the world.

From rotten burgers to strange tacos, and also jam spread on each piece of bread, there's a bit of everything in these food items. What we don't quite understand is how Burger King was able to add these disgusting foods to their typical menu. But well, see it for yourself...

15 We're Confused... Is That A Burger?

Apparently, it is. It appears to be a regular beef burger topped with oat flakes (?).

Well, we don't know, we can't know for sure. But what we do know is that is not the looks a normal beef has, don't you agree? It honestly seems like there are other ingredients in this odd mix.

14 Mush 'N' Cheese & Berry Burger: We Don't Even Know Where To Start...

Ladies and Gentlemen, welcome to Burger King Japan!

This must have been a (huge) mistake that magically appeared on the restaurant's menu—but we can assure you that is jam and blueberries on top of a bacon slice (a food item that didn't last for long).

What a strange mixture!

13 Bacon Sundae Had Everything To Work Out But Turns Out People Hated It

We know that everything that includes bacon is amazing, but not this time.

The Burger King's customers that ate the Bacon Sundae acknowledge that the idea was good, but the result turned out horribly since the crunchy bacon slices didn't go well with the caramel topping.

12 Dear Burger King, How Can You Even Call That A Taco?

(Insert taco fans' screams here).

We feel your pain. We can call that food item everything but a taco. It's just a strange mixture of cheese, lettuce, ketchup, and other unknown ingredients—plus a disgusting paste spread right in the middle of the "taco."

What's that, honestly?

11 Thank God The Black Whopper Only Stayed For Halloween...

We have to thank God on this one, we do.

Burger King had the brilliant idea of creating a special menu for Halloween and it turns out everyone hated it. Both bread and cheese were blackened with what was confirmed later to be a toxic substance.

Disgusting and dangerous.

10 "Bacon King Burger? Sure Thing, 2 (Bacon) Strips Should Do It!"

Besides looking disgusting, Bacon King Burger was a major flop.

Customers used to order it because they loved bacon, and this burger surely announced that bacon was its greatest asset.

Were they saving ingredients for the next customers? Because that's the only reason that could justify such serving.

9 Windows 7 Whopper Was Not Made For Regular Jaws

We don't know where to begin...

How can anyone think that putting 7 burgers on a sandwich would result? How can a regular human being eat that? Not even the strongest jaws could open with that range.

Just a bad idea, Burger King, a strange one.

8 The Nightmare King Scared Everyone

Didn't that scare you also?

The Nightmare King was one of the most disgusting foods Burger King used to sell. Besides looking like the bread is moldy, the overall taste of this burger was said to be a true nightmare.

This was another idea ready for Halloween pranks, which lasted very little time.

Related: 10 Odd Fast Food Items You’ll Only Find Abroad

7 SufganiKing: You're Absolutely Right, That's Jam And Sugar On Top Of A Burger

Is it a burger? Is it a donut? No, it's a mix of both!

Picture a regular beef burger with that fluffy bread you're so used to. Now, replace the bread with a sugary donut, topped with strawberry jam and icing sugar...

Bite it and expect a very tangled taste. Turns out everyone hated it.

6 That's What You Get When You Order A Veggie Burger in Budapest

Dear vegetarians, we're with you on this one...

When people order a veggie burger, they expect the beef to be replaced with some sort of vegetable protein. However, in Budapest, they haven't understood the concept and used to sell people a sandwich with lettuce and tomato whenever they ordered a veggie burger.

Related: 10 Fast Food Restaurants With Great Vegetarian Options

5 Apparently, Burger King Serves Rotten Burgers To Its Customers

And it seems this wasn't the only time since more people are complaining about the same situation all over the internet.

By looking at this picture, we can't understand if it's only the bread that's rotten or if the mold is also on the beef. Either way, it's disgusting.

4 Burger Shots: Is It a Burger? A Sandwich? A Hotdog?

We also don't get it, and that confusion made customers stop ordering the Burger Shots. People complained that the bread was too soft for their taste and that didn't even understand what was being served—it looks like tiny burgers, but it also looks like a huge sandwich.

Related: 14 Most Artery-Clogging Burgers In America (10 That Make No Sense)

3 Whopperito: We Never Knew What Was Going On In There

Whopperrito didn't quite have the looks, don't you agree?

The ingredients used were the same as the regular Whopper, but the beef was spicier and, instead of mayonnaise and ketchup, it had cheese sauce. Even though some people enjoyed it, others said the combination wasn't that tasty.

2 The Ribs Got Everyone Sick To The Stomach

Customers were not expecting that Burger King ever sold ribs. In fact, they got a little confused because they're used to just ordering burgers and leaving this kind of meat to other restaurants.

Besides not tasting delicious, people said the ribs were basically made of bones and too little meat.

1 What You Get Is Not Exactly What You Order

Do you remember those times when you're really hungry and craving a delicious Burger King sandwich? What you see is not quite what you get and this image pictures that exactly right.

Where did all the ingredients go? Where's that juicy look you've been thinking of?

Next: 15 Surprising Facts About Burger King Restaurants