If you are going to use your own phone to record your greeting, be sure to use a land line. Cell phones can’t always be trusted to produce a high quality sound and often the callers will hear distortion, static, or flight information in the background because you decided to record a new message while waiting for your plane at the airport. Always use a land line in a quiet setting to make your recording.
Funny voicemail greetings are just that. These types of greetings have no rules whatsoever. They’re just for funsies, so make those you care for the laugh. Most of the time, they are personal, but certain businesses can use them as well. Perhaps you operate a theatrical costume company that specializes in clown memorabilia, or perhaps you run a business that sells pranks, such as plastic puppy poo, and whoopee cushions.

Ideally, a business should have a complete set of messages for every phase of their call flow from beginning to end. While voicemail greetings are an important part of the phone system, there need to be recordings for everything leading up to the voicemail as well (assuming there are other steps in the call flow).
Thank you for calling Hair Professional John Smith. If you know your extension, please enter it now. To Book an Appointment, press 1. To reschedule or cancel an appointment, press 2. For Hours of operation, press 3. For other inquires, please press 4.