Up, Close, and Personal
While developing ideas I was thinking a lot along the lines of looking very closely at someone of something like in someone’s mouth or up their nose.
Then I was thinking about things situations where people are intruding on personal space. With this I thought of busy city streets, packed subway cars, and a full elevator. Being in an elevator is one of the most awkward situations because there is no personal space. At this point I had the “close and personal” part but I didn't have the “up”. Then I realized that elevators obviously go UP and down so I used a large bright upward triangle to stand out in the picture and emphasize the upward direction of the elevator.