For the longest time one of life’s greatest mysteries was how cops know you're lying, but thanks to the wonders of Reddit, we’ve finally cracked the code. It turns out that there’s no magical way to tell if someone is fibbing, but rather it’s common sense that informs most of the basic decisions that beat cops make when they’re identifying their suspects. That being said, this collection of stories from police officers discussing how they catch criminals should help you learn how to spot a liar - or how not to get caught lying. While most of the concepts on here are pretty obvious, you would be surprised to learn how many people still fall into these simple traps on a daily basis.

Even if you don’t plan on getting stopped by the cops any time soon, these stories are a good way to learn how to tell someone is lying for use in your everyday life. Do you think your babysitter is eating all your fancy eggs? Are your kids spray painting your car? Use these tips to learn classic lying tells so you can differentiate from a nervous nelly from someone who has legitimate lying body language. Keep in mind that these tips aren’t 100% foolproof. We don't know how good of a liar you are, and the officers you run into might be amazing at their job. So for now, try not to do anything your mom wouldn't do.