Our first cat never brought in a live rabbit, but one time she threw up a bunny’s ear on my wife’s pillow. I thought it was funny, but my wife didn’t see the humor. She said I’d feel different if it were on my pillow, and I told her that if that had happened, I would have just switched my pillow to her side of the bed.
If this is about physics, we should be learning the difference between weight and mass.