10 ways you can tell someone is hiding the truth

9. Lip-Licking

Did you know rapper LL Cool J once stated that his infamous lip-licking was mostly done out of a nervous habit he picked up as a kid? If this is in fact true, it would be no secret knowing that lip-licking also doubles as a sign of lying. When a person is lying they may develop anxiety which will cause certain parts of their lips to be cold. As a result, the nervous system kicks in and helps dispel this anxiety by sending blood to these spots. In the end, if a person is constantly licking their lips or touching them while telling a story, you might have a liar on your hands.