Few things make us happier than watching somebody wipe out on an exercise ball. But have you ever wondered about the scientific principles behind these ridiculous accidents? Thankfully, somebody at National Geographic has, and in their new show Science of Stupid they’re breaking down bouncy ball fails one step at a time to reveal the underlying physical causes. Whether it be elasticity, surface tension or material resilience, there’s a physics class worth of knowledge in this one episode. So you can laugh and learn something at the same time. How often can you say that? Here’s a preview so you can see for yourself.