Do you ever make the "thinking ahead" error in speech or writing?

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I do it all the time, both in speech and in writing. I will forget to say or write a word that I intended to use. Instead I will say or write the next word, or a word further along in the sentence, especially if the later word sounds similar to the first. I used to think it was a sign I was going senile. But when I observed young commentators do the same thing on the news, I realized it was a common speech error that I just hadn't noticed before. As a simple example, suppose I meant to say "Sharing shoes is gross." If I am typing away, especially if distracted by Kitty or the chain saw outside, I might type "Shoes is gross." I could go on, but you get the point. Have you ever caught your self making the "thinking ahead" error?