Shredebris
Shredebris is the slang term for the copius amount of wheat debris from Shredded Wheat Cereal that accumulates at the bottom of the box.
Carl was looking foward to his daily intake of fiber with a delicious bowl of Shredded Wheat cereal. He was sorely disappointed when he opened the box and poured the cereal into the bowl only to find a few pieces of cereal left and a giant pile of Shredebris.