I thought I was pretty hot stuff at my first job, having aced the copy editing test and all. About a year in, the desk had an opening, and they hired a guy from an NYC publishing house. On his first day, he proceeded to blow my mind thus:
You know that expression, “You’ve got another thing coming”? E.g., “If you think you’re going to get away with that, you’ve got another thing coming.” That’s wrong. As he explained, the correct expression is, “If you think [X], you’ve got another think coming.” As in, you’re soon going to be thinking something else.
Did I just blow your mind?