It happens at some places more or less, depending where you go to dance: howling of the guests. Some consider it fun. Well, it is - the first time. The second time you can live with it, but the more and more often you hear it, the more annoying it gets over the time. Why? Because it's ruining the atmosphere, it is rude behaviour and most people over the grid just use the same two or three sound clips that are around to do it.
Oh, and many don't only howl, no, when many howl the macro also makes big ASCII art of wolves and or other things in open chat, too, while howling. So that when you've disabled noise you still know that they're howling. Arg!