Currently on the front page at http://www.johnnycarson.com/
Via http://falalalala.com/fireside/index.php?topic=2712.0
This is the Tonight Show performance that the audio track is from. Carson’s deer-in-the-headlights reactions are a bonus to an already funny song.
I always pictured the singer as a chubby woman costumed for the performance as a little girl. Nope.