You can assume that some pretty disgusting things happen while your food is digesting in your gut, but it’s not often that you get to actually see it happen. This isn’t really like the Super Size Me documentary, where they put some burgers in a container and let them get moldy and rotten, this is merely an illustration of what that tasty cheeseburger goes through in our stomach. Why? Because science. Also, because the internet. Researchers from The University of Nottingham filled a container with hydrochloric acid solution, a chemical found in our stomachs that aids in the digestive process, and dipped a burger in it for 3 and 1/2 hours. The results were grimy, as the burger turned into a black sludge. Hydrochloric acid breaks down food in the early stages of digestion, so that means one of the first things that McDonald’s cheeseburger does when hitting your stomach is turn into goop. Now, someone try this with a kale salad and get back to us.