Completely unimportant language misuses that bug you

[Rockphed]

One I've encountered today that has always bugged me is arbitrarily narrowing a definition. In this case, insisting that an umbrella term can only be used to refer to one of the terms it is under.

I think you have that backwards, but just to be sure:

If I insist that "soda pop" can only refer to carbonated drinks bottled by the Pepsi Company, that would bother you.