[talk] trash
1
to say offensive, criticizing, or rude things to someone, particularly one's opponent, to make them less confident
The idiom "talk trash" is an American English idiom that means to speak in a boastful or insulting way, especially to an opponent in a contest or game. It is thought to have originated in the early 1900s in the context of sports, but it quickly spread to other areas of life. The expression eventually came to be used figuratively to describe someone who is insignificant or worthless. Thus, "talk trash" is literally to talk to someone as if they are trash, which is a way of insulting them and making them feel inferior.
- Of course those boxers started talking trash—it's a normal part of the pre-match press conference.
- You know, you talk a lot of trash for someone who has yet to show us any moves.
- The two boxers talked trash to each other during the weigh-in ceremony.
- The salesman talked trash to the competition, claiming that his product was the best on the market.
- The student talked trash to the teacher, saying that she was too easy.