I saw the prompt, "flounder," and immediately thought of the fish. As a flounder gets older, one eye migrates from one side of the face to the other. They spend most of their time lying on their side at the bottom of the ocean and waiting for food to fall whre they can get it. Very strange, and a little on the unsettling side. They talk all about it here, if you care.
My guess is that the idea was to use the other definition of flounder, meaning to struggle clumsily with something, as if you’re walking through mud or sand at the bottom of the ocean. For me, that usually happened when I was asked to stop on the way home and pick up a few things at the grocery store, and I figured that, since there were just a couple of things, I didn’t need a cart or a basket. More often than not, I was headed up to the front of the store to get a cart or a basket because I soon discovered that I was floundering trying to carry all that stuff without dropping anything. Nowadays, some forward-thinking stores put baskets all over the store, for when you discovered you couldn’t manage without a basket. I finally got over the feeling like a moron when I’d wheel a mostly-empty shopping cart to the checkout line, because I noticed that there were a lot of people doing the same thing.