Here's a piece that's relevant to me since I have a son just about to turn two, and while he is a few years away from asking questions like this I'm sure it will come at some point.
SOUNDWAVE : "Wet foot, dry foot, high foot, low foot. THE END"
FRENZY : "Daddy, can you tell me what music was like when you were younger?"
SOUNDWAVE : "Hmmmm…. now that I think about it, I think I can do better than tell you."