It was an advertisement for some Cinderella-themed movie, with a smooth male voice-over talking about how a girl had discovered she was a princess -- and then the girl's voice: "Shut up!", in the "You have got to be kidding me!" tone.
"I've heard enough bad words in commercials!" said the Little Fayoumis, sitting there with the remote. He has evidently learned about the mute button.
Hee. Hooray for good taste.