In the old days, a mill was used to refine grain into flour. Each run had the same result: a certain quality of flour. So, run of the mill means that something is very standard and usual--no exceptions.
It means that the person is as important to you as is the entire world. You care for them as much or more than all of the wealth in the world. That they are your world and your interests revolve...
The phrase "mean mug" is usually found in literature.The word "mug" in this context is a slang word for face and the phrase "mean mug" is generally meant to convey a description of a face as cruel,...