Missing

Has anybody seen my mouse? I opened his box for half a minute, Just to make sure he was really in it, And while I was looking, he jumped outside! I tried to catch him, I tried, I tried.... I think he's somewhere about the house. Has anyone seen my mouse? Uncle John, have you seen my mouse? Just a small sort of mouse, a dear little brown one, He came from the country, he wasn't a town one, So he'll feel all lonely in a London street; Why, what could he possibly find to eat? He must be somewhere. I'll ask Aunt Rose: Have you seen a mouse with a woffelly nose? He's just got out... Hasn't anybody seen my mouse?