So one of my good friends is very paranoid. He has a fear of someone breaking into his house while he is there. He locks every window and door and always has the blinds shut so no one can see in. Knowing this, I decided it would be funny to go to his house late at night and mess with him. I just got done talking to him on x-box so I knew he was home. When I got to the house I noticed his car was there but his dad's was not. Thinking nothing of it. I figured he was alone and he would be even more creeped out. I started knocking on his doors and tapping on his windows. I can hear someone inside running around, freaking out and I heard a scream. This went on for about ten minutes.
I then walked down the road to call my friend and see how he was doing. He said he went out with his dad and would be back in a bit. Confused I went home.
The next morning he called me saying that a window was open when he got home that night. The couch was also moved.
Needless to say, I think I scared the shit out of a potential robber and cause him to change his mind.