(Woman enters the subway carrying a violin case and sits next to a mother and her child.)
Child: That woman has a suitcase!
Mother: It's an instrument.
Child: What is it?
Woman: It's a violin.
Child: Is it like the trumpet?
Mother: Not really. Do you know how the violin is played?
Child: Take it out!
Mother: She can't take it out right now, honey.
Do you know how the violin is played?
Child: UP IN THE SKY! DOWN ON THE FLOOR!