If you’ve ever locked yourself out of your car, then you’re probably familiar with the feeling of embarrassment and desperation that comes with it. People stare at you, as you desperately pull on the car’s handle looking for a faster way in. As it turns out, you can avoid all that humiliation and fix the problem in no time. And apparently, all you need is a common tennis ball. The next time you forget your keys inside your car, you’ll know what to do. But maybe, give it a try before you actually use this technique.