"Crikey" is an exclamation commonly used in Australia to express surprise, excitement, or disbelief. It is similar to saying "wow" or "oh my!" and is often used in informal conversations. The term reflects the unique Australian slang and culture, showcasing the playful nature of the language. The word gained popularity through its association with the late Steve Irwin, a famous Australian wildlife expert and television personality. He often used "Crikey!" during his wildlife documentaries, which helped introduce the term to a global audience. Today, it remains a recognizable part of Australian vernacular.