Matt Forte as Rex Grossman, part II

Knowing the Bears' O-line, chances are Chad Greenway is about to hit Matt Forte moments after this photo was snapped. Getty Images

There are certain things in life I am positive I will never understand.

After reading multiple books on the subject, I still cannot say that I fully grasp the principles of quantum mechanics. I also have trouble getting my mind around the idea that, although the universe is possibly expanding at a velocity greater than the speed of light and therefore could have expanded at that rate during the "Big Bang," we know for certain that the universe is around 13 billion years old.

As mind-bending as those imponderables are, they pale in comparison to understanding the mindset of Chicago Bears fans.