Do Not Whistle at Night
There are many instances when insects come out when someone whistles at night. However, others believe that bad things such as thieves, ghosts, demons, and even storms are called upon when whistling.
Depending on the region, some people think that whistling at night brings bad luck and unfortunate events. Whistling at night, which is similar to cutting your fingernails, is considered annoying and causes trouble to neighbors.
In addition, whistling at night was actually done by thieves long ago as a signal to one another. Real thieves may misunderstand the whistle as a signal and actually come to your location. Thus, it is best to avoid doing this behavior completely.
