Things to never speak of
A year after the Red Sox won the World Series, then-owner Harry Frazee sold a great pitcher and powerful hitter named Babe Ruth to the Yankees in 1919 so he could finance a broadway play. Ruth went on to become one of the game's greatest players and it took the Red Sox 86 years to win another title. Frazee's deal started "The Curse of the Bambino."
Another moment in Red Sox history that one should avoid discussing came in the 1986 World Series, when a hobbled first baseman, Bill Buckner, allowed a ground ball to skip through his legs in an important moment in Game 6 of the series. The Mets won the game, and then won the series two nights later.