Now that quite a couple of people have voted, let me explain why I was interested in the results:
I recently read an article that stated that most people consider themselves to be "middle class", even though in practice the majority of the population is working class or lower.
I found that quite interesting, because I too would have instantly considered myself to be "middle class" as well, but without having any clue how these classes are actually defined.
Now there doesn't seem to be a clear, commonly accepted definition anyway, but I still found the claim that most people consider themselves to be middle class very interesting.
Because I suddenly realized that when politicians in my country talk publically about social classes, they always claim to be mainly concerned about the middle class. They're either saying that certain policies would hurt the middle class (if they don't like them), or that the policies that they like will help the middle class (if they are in favor of them).
If it's true that almost everyone considers himself to be middle class - no matter if correctly or not - and these politicians are aware of this, then this might be a very clever strategy to create consensus: For whatever they propose, everyone will believe that it's ultimately going to help themselves, as a supposed member of the middle class.