I used to have a neighbor who lied so much he believed himself. No matter what anyone did, he did it bigger and better. Even did a lot of things that no one else had done, always on a grand scale.
I understand-they are all over. In my over twenty years in the Military, I saw it all :)
Those guys that thought they did/knew everything really pi88ed off those of us that did :)
Did he move to Texas? I think he lives across the street from me!
Just kidding, but I have known people like that. They simply cannot open their mouth without a lie coming out. I think it just gets to be a habit.