Trash-talk is a form of boast or insult commonly heard in competitive situations. it is often used to intimidate the opposition, but can also be used in a humorous spirit. trash-talk is often characterized by use of hyperbole, or figurative language, e.g. , "your team can't run! you run like honey on ice!" puns and other wordplay are commonly used. trash-talk was commonly used by the heavyweight boxing champion muhammad ali in the 1960s and 1970s.