Punished For Something That I Didn't Do!

One day a little girl came home from school, and said to her mother, "Mommy, today in school I was punished for something that
I didn't do."

The mother exclaimed, "But that's terrible! I'm going to have a talk with your teacher about this! By the way, what was it that
you didn't do?"

The little girl replied, "My homework."