Pillowgeddon
The utter destruction of a down pillow or pillows in a confined space, or the evidence thereof. Some pillow fights can result in pillowgeddon, but not all pillowgeddons are the result of a pillow fight.
I placed a beloved goose down bolster pillow handmade for my wife by her long dead aunt in the dryer. When I opened the dryer door after multiple drying cycles I was witness to pillowgeddon.