That would definitely scare the hell out of me if I was not used to it. Even then I am sure there are moments that you get a jump and do a double-take at times. Well, I guess you are never alone in a way.
Here's something else that's scary - people with bad grammar and spelling. I weep for today's youth.
It is too easy to get in the habit of doing. As with all habits they stick to you and are hard to break. Even with trying to keep my grammar/punctuation/spelling conditioning intact, there will be times that I will reread something multiple times and miss a mistake.
Now that... is scary that I will look a mistake over that many times when staring right at it! I must be a bit dyslexic. Who knows... maybe not or maybe so.