Heck it is not just old people that fall for phone scams. The dumbass husband of a friend got in his car to go get Target gift cards and gave his scammers $2500 worth before his wife stopped him.
I rarely answer my home phone anymore because of all of the spam and scam callers but sometimes just for sport, I answer using my decrepit old man voice just to see how long I can waste their time. Lots of not understanding or hear. It is really fun to "mishear" things (think violins on TV) and go off on a tangent and keep talking over them as they try to steer me back on track. I've even given a couple made up credit card numbers. When they say the number is not valid, I just tell them I have not used it in a while. It usually ends when I can't stand it any longer and start laughing. When they cuss me out I thank them for making my day.
I was thinking just yesterday that I should change the voice message on the machine to simply say "hello" in my old man voice and then pause for a few seconds before letting the answering machine take the message.
--Nathan, TX. Hire the lazy man. He may not do as much work but that's because he will find a better way.