What is your answering machine away message? If you don't have one, you can make it up!
We don't have one on our home phone, but on my mobile it's just "Hey, you've reached Carrie, please leave a message." I'm thinking of changing it to something a bit more professional since I get work calls etc on there now. Will prob just change it to "Hi, you've reached Carrie Surname, please leave a message and I'll get back to you as soon as I can."
On another, more interesting note, Phillip's is very honest and not at all rehearsed lol. His goes "Hey, this is Phil, probably.. my phone's probably on silent, so if you leave a message, I'll call you back. Alright, seeya." :)