Live To Love and Laugh

Marvin and Anabeli were playing up in her room.
I am not sure what happened but she came stomping down the stairs with Marvin mumbling after her.
The only part I heard was, "Stupid."
ME: "Marvin that is not nice. I told you to be nice. You don't call her that. I am listening to you. "
Without missing a beat or even thinking twice he said, "What? I forgot her name."
Miraculously he remembered it when I suggested a time out on the sofa while he tried to remember her name.