We don't begrudge the Girl Scout in the video below for a little bragging. She sold 60 boxes of Girl Scout cookies this year, after having sold just 10 the year before. She is a credit to her troop, even if the delicious treats basically sell themselves.

But, as you will see, her celebration gets a bit carried away.

There is a happy dance. Then she resorts to an arrogant, sing-songy voice. Then something unexpected but quite profound happens.

It's OK to laugh, since she was ultimately unhurt. But we're still trying to figure out how she managed to fall forward and bump her head so violently. Karma can be just as powerful as it is vengeful, we guess.