The feeling experienced prior to christmas day when you simply can't continue shopping due to excessive tiredness, confusion and anxiety. Usually triggered by many hours spent in shopping malls, mall fatigue will cause you make bad consumer decisions in an attempt to finish quickly and escape the horror of the christmas shopping rush.
Shopper 1: "I simply can't go on. I think I have mall fatigue."
Shopper 2: "I can tell - your eyes are red and you can't walk in a straight line."
Shopper 1: "I know. Make it stop!"