Gary Payton was known as "The Glove" during his NBA career for his tight defense, but his trash talk might have been his most potent weapon. Most players stop to breathe when they're engaging in trash talk. Payton had a nonstop motor mouth that gave him the advantage in any matchup.
Kevin Garnett may be the most intense player to ever step foot onto an NBA floor. In the heat of the moment, nothing is off limits to Garnett. He will bark at you for anything and everything if he thinks it gives him an advantage.
Usually, players will stop at talking about family or loved ones. Garnett allegedly told Carmelo Anthony that his wife tasted like Honey Nut Cheerios in the middle of a game. Anthony denied Garnett ever said it, but it isn't out of the question when it comes to the future Hall of Famer.