When your 19 month old (now 20 mo) is sitting quietly on his PG grandfather's lap, watching a program on the music channel and you walk in and he turns his head and knowingly says "Look, Mama, Lang Lang" pointing to the guy on the screen and you think it's gibberish and you say "who?" and your Dad informs you that "Max is referring to Lang Lang, we're watching a documentary about his work". And you discreetly go Google "Lang Lang" when their backs are turned blush