@umbra21 - It's not jokes that annoys me so much as someone who leaves a message ten minutes long, particularly when you have to wait out the whole thing before you can leave your voicemail.
Interesting Voicemail Greeting Examples to Cheer Up Your Callers. Voicemails can give an important message or inform the caller about the receiver's status. Thus, it is important for you to be clear while recording such messages. Here are a few examples of voicemail greetings to get an idea about appropriate messages that can be recorded the

Business Phone Greetings 101. As a professional company, you want to get across the right message to clients, partners, customers, and others who call your business. For phone greetings to be successful, they need to be: Crisp. A crisp, clear voice goes a long way. The message needs to be clearer than glass.
Thank you for calling the XYZ corporation. Please listen carefully to the following menu options, as our menu has recently changed. For new customers, press 1. For existing customers placing a new order, press 2. For product support, press 3. For accounts receivable, press 4. For accounts payable, press 5. To hear contact information and directions to our main facility, press 6. To dial by name, press 7. Press 0 if you wish to reach an operator.