Hello, you've reached Jim and Sonya. We can't pick up the phone right now, because we're doing something we really enjoy. Sonya likes doing it up and down, and I like doing it left to right... real slowly. So leave a message, and when we're done brushing our teeth we'll get back to you.
We actually know a top insurance sales guy who did a sales motivational message every day just like this, and people used to call just to listen to his thoughts.

“Hi, this is [name]. I’m either on another call or am away from my desk. Please leave your name, contact details, number and your reason for reaching out and I will get back to you as soon as possible. Thank you for calling.”
I have a confession to make: I haven’t recorded a new voicemail greeting since 2014. In the past four years, I (hopefully) have become more articulate, poised, and self-assured. But hear my voicemail recording, and you’d think I was still new to the work world, a little unsure of myself — and probably not an authority. Obviously I need toupdate it. And if you haven’t changed your voicemail greeting in over a year, you’re likely in the same boat. After all, a professional voicemail recording boosts your credibility, makes you seem more competent, and encourages whoever’s listening to it to continue the relationship. A relatively unprofessional one — like mine, for instance — does the opposite: It encourages prospects, recruiters, and potential connections to run in the other direction. With that in mind, I’ve written 18 unique voicemail greetings for every situation. Pick your favorite, practice a few times, then record your new voicemail.