Do you have a 'tell' when you're lying?

The eyes are the well to your soul, If you can keep eye contact without looking away while telling a lie only some people can get away with the lie. But a lie is just that a falsification of who you are, Too many people lie today, so being able to lie in today's world is normal, not much can get buy me though. I usually get at feeling when I am with some one, when they are lying. An unexplanable feeling but I would have to say that a very good part of the time I am correct when it comes to finding the lie in most peoples stories