So, here's the deal, shucked corn is basically just corn that's had its husk and silk removed, but it's still a high-moisture food, which means it's a breeding ground for bacteria and other microorganisms. That's why it's generally recommended to store it in the fridge, where it's nice and cool. But, let's dive a little deeper, shall we?
Now, I know what you're thinking, "But I've left shucked corn out on the counter before, and it was fine!" And, yeah, maybe it was, maybe it wasn't. The thing is, bacteria can multiply rapidly on high-moisture foods, especially in warm temperatures, so it's always better to err on the side of caution. Plus, refrigerating it will help keep it fresh for longer, which is a total win-win.