A couple of years ago, I hired a temp staffer to help our secretary during a particularly busy period. He was a nice young man and seemed to know what he was doing. One day the secretary came to my office and told me he asked if we'd be willing to train him on the 'manual keyboard'. He didn't know what it was called. We both cracked up (behind my office door, of course).
In all fairness, when we told him it was a typewriter, he blushed and said "Oh, yeah. My grandmother has something like that."
It didn't make it any better.