Sometimes I hear my neighbors. I regard it pretty fondly, imagining who it is and what kind of sex they're having (presumably, decent). Today I thought I heard cries in my building and stopped by the door to lean against the crack and listen. At this point I became very aware that I was actually listening to the female vocalist of my downstairs neighbor's gospel music.
And then "saw myself," standing at the door, leaning with rapt curiosity to hear my neighbors fucking, and I felt creepy. Real... creepy.