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.
Most of you will agree when I say that one of the coolest features of Google+ is Circles, which lets you create groups of people to share specific things with, rather than sharing with everyone in your network by default. Today I came across an iOS app that basically has the same system in place, but for voicemail. It’s called On Voicefeed and it lets you build groups (family, friends, work, girlfriend/boyfriend) and set personalized voicemail greetings for each of those groups.

Website: https://docs.microsoft.com/en-us/microsoftteams/set-up-phone-system-voicemail
With Visual Voicemail, you can see a list of your messages and choose which ones to listen to or delete. Learn how to set up and transfer your existing voicemail. Create a voicemail password, then tap Done. Enter your password again to confirm it, then tap Done. Select Custom or Default. If you choose Custom, you can record a new greeting. Go to the Phone app, then tap the Voicemail tab. Tap Set Up Now. Enter your password,* then tap done. Record a custom greeting or use the default greeting, then tap Save.