alt Hacker NewsI had a housemate in college who used to party until all hours, bring people back at 3AM and put on loud music. Even during exam season. I tried talking to her a couple of times but she would roll her eyes and say "sure". Never stopped though.
One evening my girlfriend was using a hair straightener in my bedroom, it tripped the central fuse and turned off the electricity. I told my GF that I would buy her a new hair straightener because this one isn't safe.
Now every time my housemate started blaring music at 3AM then I just needed to plug in the hair straightener. It only took 3 or 4 attempts for me to Pavlov my housemate into not playing loud music at 3am. :-)
I had the same problem when I was in uni. Funnily enough, the RCD switches for each block were behind a panel in the common toilets, which did not have a real lock; just a hole for a "cabinet key" (a square rod).