Have you ever seen a curly straw before? You know how the straw goes up and down and twists around? Well, a corkscrew on a roller coaster is like a giant curly straw for people to ride in! The roller coaster tracks twist around in a tight spiral, like a corkscrew, making the riders feel like they are twisting and turning inside a giant spiral. It's very exciting and can make your tummy feel funny, like butterflies! But don't worry, it's very safe, because the coaster is built to keep riders secure even when they are twisting and turning upside down!