"I said crazy things. ... I had no idea what I was talking about," she told "Good Morning America's" George Stephanopolous.
"When a police officer tells you to stay in the car, you stay in the car. I learned that for sure," she told Stephanopolous, laughing. "I think I've played a lawyer in a movie so many times I think I am a lawyer, and clearly I'm not a lawyer, because I got arrested. So yeah, I learned a lot."
Witherspoon won the best actress Oscar for the 2005 movie "Walk the Line."