The Princess was indulging in one of her favorite pastime, singing at the top of her lungs. This was frustrating the professor, so he retaliated by getting in her face. (Yes, she sings on key.)
A few minutes later, Princess prances into the room with a huge grin on a her face. She approaches me, close enough to share her exiting secret.
"Mommy," she said, face glowing "The Professor was annoying me, so I ignored him, and after a few minutes he gave up."
So they do listen to me. Sometimes. Thank G-d.