@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.
The way all your words and sentences come together gives your script a distinct written tone. Combine that with a specific speaking tone to create an on-hold message that reinforces your brand and product set. Selecting the correct tones will ensure your intended message is communicated effectively. If your target market is the younger generation, then a tone which embodies fun and excitement would be most suitable.

Customer experience is today’s business battleground. At a time where it’s common for even the most established businesses to deliver poor service, incompetent support, and just outright bad communication, how do you stand out? As big companies fail in the customer experience department, doors open for small business owners and entrepreneurs to distinguish themselves.
To improve a a business voicemail greeting, keep these eight rules at the forefront of the creative process: Avoid turning customers off with overused and impersonal phrases like “your call is very important to us..." Avoid leaving customers unsure by not immediately telling them the business, department, and/or person they’ve reached.