I found a few that gave me a laugh
Hi, we're not home right now so leave your name and number after the beep, if you are calling to collect an outstanding debt, please leave your name and number before the beep.
Hi, you've reached the home of ............... If you are calling to collect a student loan, gambling debt, or other obligation, please press 1 and hang up now. If you are selling any product or service, or requesting charitable donations, please press 2 and hang up now. Otherwise, press 3 and leave your message now. Pressing 3 is optional
Due to the large number of complaints regarding the length of our previous answering machine message, we made a few changes. Very fast: Hi, this is ........ If you want to leave a message, please wait for the tone. If you want to leave your name and number, please press pound, press 3, then dial your name, then press 6 and dial your number. If you want to leave your name and just a message, press star, press 6, ask for extension 4443, then leave your name and message. If you want to leave your number and the time you called, please press star twice, spin in a circle, press 1 twice, talk loud and BEEP