The lyrics to George's singing phone message:
Believe it or not,
George isn't at home,
Please leave a message at the beep.
I must be out, or I'd pick up the phone,
Where could I be?
Believe it or not, I'm not home.
The words are a parody of the theme song to the series "The Greatest American Hero." That song became a top 40 hit for singer Joey Scarbury in 1981.