"Madman" is a term often used to describe someone who exhibits extreme or irrational behavior, typically associated with mental instability. This label can be applied in various contexts, including literature, film, and everyday conversation, where it may evoke a sense of unpredictability or danger. In popular culture, the term has been used in titles, such as the song "Madman Across the Water" by Elton John and the film "Madman" from 1982. These works often explore themes of madness, isolation, and the complexities of the human mind, reflecting society's fascination with the concept of insanity.