Quiz Answer

According to a study done by Cornell University's Food and Brand Lab, the average calorie count for a modern Thanksgiving dinner is 2057 kcal.

This is more than many of us need to consume over an entire day!  And that is just the dinner - not counting breakfast, lunch and appetizers.  (Get an estimate of your daily calorie needs at MyPyramid.gov)

It takes 12h 42min of Black Friday shopping to burn this many calories for a 150 lb person.
To estimate how long you would have to do other activities to burn off this many calories, see healthstatus.com, but be careful not to let the ads hurt your eyes.

And the winner is...
gravityfalls had the closest guess at 2100 kcal.
Congratulations gravityfalls, your are officially a Smartie Pants!