Brown note

The brown note is a supposed low-frequency sound that has been rumored to cause people to lose control of their bowels and have an urgent need to go to the bathroom. Some people even believe that it's possible to use this sound as a weapon or a tool to control crowds by making them feel uncomfortable or sick to their stomachs.

However, there is no scientific evidence to support the existence of the brown note. In fact, studies have shown that it's impossible to create a sound that can cause involuntary bowel movements or make people feel physically sick.

So, in short, the brown note is just a myth and not a real thing.