That was future Hall of Famer Pedro Martinez calling the dynasty Yankees his "Daddy" after the Bronx Bombers crushed him for a second straight start on Sept. 24, 2004. In the two starts, the Yankees got Pedro for 13 runs on 17 hits in 12 1/3 innings (9.49 ERA, 1.78 WHIP).
The rest of the story, of course, is that those 2004 Red Sox would come back from a three games to zero deficit to win the ALCS in seven games before winning their first World Series since 1918. Martinez posted a 6.23 ERA against his Daddy in the ALCS, though, and every time he pitched in Yankee Stadium, the fans would chant "who's your Daddy" along with the organ music that was usually paired with a "let's go Yankees" chant. Fun times.