There are a lot of hotheaded athletes, but sports trash talkers quotes are some of the funniest youll ever hear. Whether its Conor McGregor and Floyd Mayweather Jr. going at each other, John McEnroe screaming You cannot be serious, or the man formerly known as Ocho Cinco Chad Johnson rattling the cages of opposing teams in post-game interviews, these are some of the best trash talkers in sports of all time.