A mouse in her tummy?

I helped out in Sunday School today a bit. I told the kids my cat likes to eat queso (cheese). The kids all looked at me like I just said the craziest thing in the world. Then a first-grader I've known since she was a baby says, "I thought a mouse was the only animal that likes cheese."

"Yeah, me too," I reply.

Then the little girl says with a looks that shows she has definitely come a reasonable conclusion about the situation, "Maybe your cat has a mouse living inside her tummy and that is why she eats cheese."

I then told the little girl I was going to listen to my cat's tummy when I got home to see if I could hear any squeaks.