A very difficult ride to describe. You sit in a rubber tube with a rubber "floor" designed to slide down steep snow slopes. Only here, you slide down a not very steep bit of carpet. Well, I say slide, it's more like "sit at the top in a rubber ring looking like an idiot".
Eventually, a kind eight year old will show you how it's done. You have to propel yourself by pushing along with your hands.
Now you look like an idiot making physical effort to look stupid. What a fantastically devious ride.