1. "Hi, you've reached [your name] at [your company]. I'm unavailable right now — probably helping [type of company] get [X results, e.g. ‘double their leads in 60 days,' ‘hire the best and brightest engineers,' ‘convert 40% more customers.'] Leave your name and number, and we'll discuss how your company can see similar results."
A clever, witty voicemail message can be short or long, complex or simple, as long as it is entertaining. Using famous lines from TV shows or movies is a great place to start. There is a lot of creative wordplay that you can use based on famous lines from classics like The Twilight Zone. For instance, you could say, "Hello, you've reached the Twilight Phone, where every message is sent into another dimension. To receive an interdimensional call, just leave your name and number, and I'll call you from the closest parallel universe."

Hello, you have reached the _______'s residence; we cannot reach the phone right now, so please leave a message after the beep. (Then you find something that makes a beeping sound, and make the beep sound, then wait 5 seconds, until they start talking, then make another beep, and do that over and over.)
It starts off pretty normal until Jimmy witnesses said car accident while speaking: