Here’s how the Internet rabbit hole works. I get recommended a classic Bernie Mac standup, where he comes out to a hostile crowd and says “I ain’t scared of you...” well the next word can’t really be printed here, but needless to say never has a crowd been won over faster. This leads me to Bernie Mac’s Wikipedia page. I read some of his page, find out he sang “Take Me Out to the Ballgame” during Game 6 of the 2003 NLCS, and replaced “Cubbies” with “champs.”
The Cubs were winning that game 2-0 at the time and some superstitious Cubs fans think he jinxed the Cubs.