I had some fun a while back. I got a call from 'Microsoft' saying my Windows machine was causing all sorts of problems on the Internet but they would help me to resolve it. I had just sat down at the computer so though I'd play along.
'Kevin' (with a heavy Asian accent!) asked me to press the function button. 'What's that' I asked. He said in the bottom left corner of my keyboard is a button marked Ctrl. 'Yes.' What button is to the right of it? 'Alt' I said, and to the right of that? 'The space bar.' OK, if you go left from the space bar what button is next? 'Alt.' And to the left of that? 'Ctrl' I said.
OK he says, lets try another way. Can you open up the Google? 'Sorry, I don't understand.' Do you know what Google is? 'Yes, its a browser.' OK, so can you open it? 'No.' Why not? (I'm getting bored now) ' Because I use Safari on an Apple Mac (lying through my teeth.)
Click - gone.
Curiously I have never had ANY call from 'Microsoft' since, and that was getting on for two years ago.