" Then I say, " Let's go and brush our teeth." So Lola says, " But Charlie, I can't brush my teeth because somebody is using my tooth." " But who would use your toothbrush?" I ask. Lola says " I think that lion. I saw a lion with my toothbrush and now he's brushing his teeth with it." " But it isn't this your toothbrush Lola?" " Oh," says Lola, " he must be using yours. "