"Oi!" is an exclamation commonly used in British English and some other English-speaking regions. It serves as a way to get someone's attention, express surprise, or indicate annoyance. The term is often used informally in conversations and can convey a range of emotions depending on the tone and context. In addition to its use in everyday speech, "Oi!" has cultural significance in various media, including music and film. It is frequently associated with British punk culture and can be heard in songs by punk bands like Sham 69 and Cockney Rejects, reflecting its roots in working-class vernacular.