right now mine is the standard leave your name, number, ect. but for a while it was:
Hello, if this is who I think it is leave a message
If it isn't who I think it is leave a message anyways, maybe we'll do lunch.
If you you aren't who you think you are don't leave a message - get help!
By the time the message finished the majority of the callers forgot why they called in the first place, but I didn't have very many hang-ups, they usually left a message..