In nosiness, the cups are stuck all over the walls and doors with putty. You may have seen in older movies or tv people putting a glass to a wall, trying to listen to what is being said in another room. There are so many glasses in the hall of this apartment bldg to represent the idea of the nosy person being able to move up and down the hall with ease and not miss a thing. It is about curiosity, an inappropriate desire to know what is not our business. It is also about someone trying to connect with other people but not having the social skills or ability to do that.
Source: From a lecture given by Sarah Hobbs at Augusta State University (29 September 2011)
