One of my favorites had this very exciting scary music, along with a
kitten crying in the background, and the voice goes:
The machine answering this message is connected to a 5000 volt power
supply, and a relay which is wired to this small kitten. If you hang up
before you leave a message, it will complete the circuit and will fry
the kitty. The choice is YOURS.... BEEEEEEEEEEEEEEEEP