Karma is defined as: One's acts considered as fixing one's lot in the future existence. The doctrine of fate as the inflexible result of cause and effect; the theory of inevitable consequence.
Or more loosely as realizing someone that thinks that they are God's gift to the world and once greatly insulted your intelligence can not even spell his own city on his company's website! Sometimes saying nothing in your defense and waiting for things to come back around is the best thing you can do! Now back to happy thoughts! :)