Years ago, back when I was in middle school, I saw an angel, and a few years ago when I was in high school I saw a demon. This past summer, I had looked at a bunch of pornography on the computer while my family was away in Washington, DC, and when I was "done" I could hear footsteps walking all around the house; and I was home alone. I invited a friend over the next night to see if he had the same "experience" and he heard it also. We prayed throughout the whole house, and what not, and we've not heard any of this since.