Allan, a friend of mine in college, was in a neverending battle with the folks who lived in the dorm room adjacent to his. I never knew the specific dispute, but it was probably noise-related–his room and theirs shared a wall through which sound passed unimpeded.
One evening I stopped by Allan’s place as I headed off-campus. He and his neighbors had just had some sort of altercation, and he was livid as a consequence. Before we left he cued up the following track on his CD player and hit play. Then he turned the speakers around so they faced the shared wall, turned the volume up to 8, and set the stereo on “repeat track”. “Okay,” he said, “let’s go.”
When we returned several hours later, the music was off and his door was broken.