Chief Keef, born Keith Cozart, is the Chicago rapper who helped bring drill music to a national audience in the early 2010s with tracks like I Don't Like and Love Sosa. In Chicago slang, joe is a casual name for a man or friend, a term that appears often in local speech and rap lyrics. Short clips of his voice have circulated widely on soundboards and social media, where fans isolate single words and ad-libs and reuse them as reactions far outside the original songs and interviews.