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A stupid dance that looks like a drunk goat was hit by a truck. You can yell it when something is so dumb it makes your brain explode.
I saw my uncle do the gabbering fabberwaltz at the wedding. It was like watching a chicken fight a robot.
My friend tried to explain quantum physics while doing the gabbering fabberwaltz. It was a disaster.
The whole class had to do the gabbering fabberwaltz for being too loud. It was like a zombie apocalypse.