It's just paper

This morning Dad went to put on his slippers so that he could take out the trash. Before grabbing the first slipper he noticed a piece of shredded cardboard inside the slipper. He went to pull it out and realized that there was more, a lot more in there. Then he grabbed the other slipper and found that both slippers were stuffed with carefully shredded cardboard pieces. Which made him think that either a rat was building a nest in his slippers, or Mickayla and Will had something to do with it. So he went to Mickayla and asked if she had anything to do with the cardboard shreds in his slippers. To which she mater-of-factly replied, "It's just paper Dad"

I have no idea what made them think it was a good idea to shred cardboard and stuff it in Dad's slippers... but what does it matter... after all, it is just paper.