You are dazed, bewildered, trapped in a world with no time, where color collides with sound, and shadows explode. You see a sign up ahead. This is no ordinary answering device; this is "The Twilight Phone."
If you haven't Got an MP3 Player?? Have a funny Voicemail setup Directly on your mobile network. You ave called the Staines massive Ali G. Hi this is Britney spears - sometimes my friend cant come to the phone The President is not in the office at this time.

One episode of The Simpsons has Homer and Marge buying a book about trying to invoke this trope, and end up trying to record a message together while reading out of it. It sort of goes without saying, but it ends up being So Unfunny It's Funny.. A season 2 episode had Homer calling Barney for bail, and initially gets an answering machine message sung to the tune of Beethoven's Fifth Symphony.
When you leave a voicemail do not use your full name because that immediately raises a red flat that you are a salesperson making a cold call. Instead, say your first name only followed by your company name. This will make your customer feel that you are much more familiar with each other than you really are. Saying your last name would defeat the whole purpose of demonstrating familiarity.