babbity scrowl
A loud, annoying noise people use when they have nothing to say and don’t want to admit it. It’s like a dog trying to sing a song.
He yelled 'babbity scrowl' and threw a shoe at the wall.
She said 'babbity scrowl' and walked out of the room.
When asked why he didn’t show up, he said 'babbity scrowl' and hung up the phone.