Being a part of a middle class family myself, I have been associated with the people of the upper-class as well as with the people belonging to a lower labor class. The main thing that I observed between these two classes is the basic difference of culture and social order that each of these follow. For example, if I were invited to a Rockefeller mansion for a weekend gathering perhaps, I would try and follow the etiquettes and rules of that upper-class. I would get dressed up in the best possible manner, and might as well follow a certain dress code, if there would be any. I would get a nice perfume to apply on and make my hair accordingly to go with the elegant look. I would improve my table etiquettes also and would even adopt a decent language style for the evening. Because if I won't follow certain rules, I might be termed as bad mannered. The conversations that will go on here are most likely to be related to politics & power, careers & education, and business.
But if I were to go to the fields and work alongside a migrant labor family, my behavior with them would be be extremely different. Like, I would not be concerned about what clothes am I wearing and how do I look like. I would speak and eat freely. I might not even consider whether I am stinking or not and would be much more my ownself.