Good for a Good Laugh

There are just some people who should not be allowed near a computer.
I just watched a 50 some odd year old man, who's been around computers for years (or so he claims), try to type. He had insisted that his keyboard was not allowing him to type capital letters when he used the shift key. So I thought ok, maybe he just has the caps lock key on and is trying to use the shift.
As I stood watching him type in an effort to show me what was happening, I had to restrain myself from bursting out laughing. He has the peck and poke syndrome; for those of you who don't know what that is, it's where you use only your index fingers to type on a keyboard. Most of you know you have to keep the shift key held down to make a capital letter.
Not wanting to alienate the person, as that would probably have landed me in hot water with my boss, I offered to pull the shift keys off the keyboard and clean them. With that done, I replaced them and took a turn on the keyboard myself. As you might suspect, the keyboard worked fine for me. This guy stood there and watched as I typed, then decided he wanted another try on the keyboard while I was there. I relinquished the chair and he sat down and typed a few words, which of course worked until he typed a letter where he didn't hold the shift key down long enough.
He turned to me and said, "It just did it again. I held the shift and typed a k and got a lowercase letter." At this point I didn't know what to say to this man. He typed a few more capital letters with success and decided it must be working correctly.
I told him it might have been that I cleaned the shift keys. He said it might be his touch. What can you say to reasoning like that?
Texas_chic signing off