Where is your Mousey?

I asked my cat. No, not there where the curtain's pulled back. You left your Mouse Somewhere in the house. But where? And I gave my Kitty a pat.

What does a Mousey look like?

Well, not like the gray ones that go skitter-skat. No, this one's of thread, Made of green and of red, And its shape is a bit like a boy's stocking cap.