Step, Rub, and Crackle! The Rubbing Bang looks like a small, colorful stick or twig. Instead of lighting a fuse, you drop it on a hard surface (like concrete or asphalt) and rub it with the sole of your shoe. As you apply friction, it erupts into a series of rapid-fire, loud crackling sounds. It’s a very popular “active” firework for kids and adults who want to be part of the action.