Fads are short-lived trends or behaviors that gain popularity quickly but fade away just as fast. They often capture the public's attention and can be seen in various areas, including fashion, toys, and social media challenges. Examples of fads include hula hoops, fidget spinners, and viral dance challenges. Fads typically appeal to a wide audience, especially younger people, and are often driven by social influence or marketing. While they can create excitement and community, they usually lack lasting significance and are replaced by new trends over time.