The Clue: He keeps scratching his nose or ears.

When a man is afraid of being caught in a lie, his heart rate often accelerates and blood rushes to his nose, ears and forehead, creating an itchy, tingly sensation.

Your Move: To get the truth out of him, put on your friendliest face. Then frame your questions in a way that sounds like you’re being curious rather than accusatory. A fibber will rarely plot out the minutiae of his story, so if you listen long enough he may get tripped up in his convoluted tale and spill the beans.