“Hi, this is Ralph. You’re getting this message because I’m probably sleeping. Leave your message at the tone and maybe I’ll call you back when I’m awake. If this is about anything food-related, please press 411 and your call will be rerouted to the dog, who will immediately wake me up to take your call. Do not use 411 because you want to tell me you lost a whisker or your human changed cat litter brands on you. I don’t care. Food only! And anyway, why aren’t YOU sleeping? Weirdo.”
Another way to make up funny voicemail messages is to act like a device has come alive. For instance, you could say,"Hello, I'm Bob's hair dryer, and I've taken over because I'm way more interesting. If you'd like to leave a message for him and have your hair dried at the same time, just hold up the phone." Answering like an answering machine, a microwave, or refrigerator and using the functions of that device in the answer are easy ways to create a fun voicemail.

No30: I don't want to bore you with metaphysics, but how do you know this is an answering machine? Maybe it's a dream, or maybe it's an illusion, or maybe YOU don't really exist. One way to find out is to leave a message, and if it's reality, I will call you back.
A man calls wanting help with a dead, frozen, road-killed cat that someone left on his doorstep sometime during the night.