I defy you to tell me that you've never made something up about yourself to impress another person.
And NEVER is the impulse to lie about oneself more overactive than when one is a child.
Tell us, what lies did you make up about yourself as a kid?
Maybe you told people you had a famous family member?
Perhaps you used to blag about a skill you had, but definitely didn't.
Or maybe you've kept up a lie about an injury you heroically sustained because you loved the attention it got you.
