Then it makes sense.

[In a discussion of the limits of city lines and counties in a Southern state]
Student 1: I just don't get it. There is a little, city-sized hole in the county, and the city doesn't get to be part of the county, it's something else, like a city.
Student 2: Right. The city isn't part of the county, although being within the geographical bounds of the county, its status as a city exempts it from the county.
Student 1: I just don't get it.
Student 3: Think about it in terms of the dual natures of Christ!