I was trying to buy Catherine off tonight and get her to be quiet and go to sleep by offering her one of their stuffed animals: a duck.
She examined the creature and became somewhat disturbed when she realized it had no ears.
I explained to her that sorry, ducks don't have ears. (I left it at that, not wanting to get into the anatomical and functional technicalities with a three-year-old).
Now she insists that we go to the store tomorrow on behalf of the duck to buy it some ears.