Based on the context and the answer, generate a question. 

Context: We use cloth grocery bags and I 'd emptied one , tossed it to the kitchen table and turned to the next one . I heard a demanding meow behind me and turned to see one of our two cats SQUATTING ON THE GROCERY BAG ! ! ! ! He looked right at me and started peeing on the empty grocery bag ! ! ! The Bastard ! ! !

Answer:

The cat has used their belongings to go to the bathroom .



Why is the narrator so mad at the cat mentioned in the story ?