We had smurfing fire alarms all the time at my halls of residence, and they'd test the bloody thing out every Wednesday at 10 AM (as if it needed testing with the amount of times it went off anyway)

And the alarm wasn't your stereotypical ringing sound, oh no, it was this godawful NYTEAAAAARRRGHGHEHETATATETAAAAAAAAAGHRHRYEETAAAAAVEEEEEEEEEEEEE type noise which always cut right through me.