...all the world's a nail.
Or, in Babs' case, if your only word (sign) is "more" it will have to do.
When she wants something, whether that be to be put down, food, to be put to bed, she signs "more." We rarely know quite what it means (although it's pretty clear when one of us has some candy), but we do know it means she wants something, so at least we can try to fill a need. I suppose now I need to learn, then teach, more signs, so this girl can tell me what she wants to say.