Famous basketball player Larry Bird was known for his trash talking. There were multiple examples of him taunting other players and boasting.
On one Christmas day, he was playing a game against the Indiana Pacers. Before the game, he told one of the members of the Pacers, Chuck Person, that he had a Christmas present for him.
During the game, while Person was sitting on the bench, Bird shot a three pointer right in front of him. When he released the ball, Bird turned to Person and said "Merry f*%#ing Christmas!" The shot went in.
Bird wasn't entirely unprovoked though. Prior to the game, Person, who was nicknamed "the Rifleman," had said "the Rifleman is coming, and he's going Bird hunting."