The story behind that lyric is well known. Have you ever seen a mountain lake on a beautiful sunny day with the mountains reflected on the water? That's what Anderson was describing.
In a message dated 8/30/2009 8:21:06 P.M. Eastern Daylight Time, zappaboggs@yahoo.com writes:
Oh for crying out loud!!! Hilarious!!! I'd rather see mountains come out of the sky and stand there!!!