Believe it or not, there's a field of experts who specialize in lipsology and analyze lip prints. Similar to zodiac signs and palmistry, there's a hidden meaning behind your mark, says Snodgrass, one of just six certified lipsologists in the world. But unlike the first two categories, which look at your future and stay relatively constant throughout your life, your lip print reveals your personality at the moment. "Your print changes based on your energy levels, your emotions, and what’s going on in your life," Snodgrass explains. "I’ve seen [a person] before and after a job interview or a tennis match, and the prints change."