I've only taken one, and I went the "completely computer illiterate" route. He was stuck on getting me to press the Windows key on my keyboard, but I just couldn't find it. The funny thing was, I actually didn't have a Windows key. I was using an older mechanical keyboard, and it had no Windows key. After about ten minutes of him insisting there was a key between CTRL and ALT, and me acting confused and saying there wasn't, he told me in exasperation that I was "stupid" and needed to "get educated", and then hung up on me.
I just had another call a couple days ago, but I didn't have time to play.