Why Do People Lie?

I just don't get it. I caught someone at work lying to me when he didn't really need to do so. I backed him into a corner with the truth and all he had to say was "I dropped the ball" I would have understood. now a big drama is going on at work as he continues to spin the lie.

I just don't understand. But I got vindication and he and our office manager got their asses handed to them.

Karma is a B*tch..