When asked about John Mayer, Jessica dodged, sarcastically saying, "My private life is so private!"
She told photographers to be careful of her car while ignoring several more questions. Simpson only responded directly when she was told she looked great -- that got a "thank you guys" from the star.
But the punchline came later, when Jessica left a camera store and hopped behind the wheel. "It stinks in here!" said the pop singer, "Sorry, there's food in here. I promise I didn't fart".