Why Washington Nationals fans are obsessed with the ‘Baby Shark’ song

(CNN)The Washington Nationals are headed to the World Series for the first time in the franchise’s history, and if you caught any of their postseason performances so far, you’d be forgiven for being a little confused. Long answer: The whole thing started when outfielder Gerardo Parra used the song as his walk-up music in June. At the time, the Nationals weren’t great and Parra was in a slump himself. Walk-up songs are good opportunity to show a little personality, and Parra has kids, so he decided to join the ‘Baby Shark’ trend. For whatever reason, the song stuck. Maybe it was because Parra is a cool guy, or because the Nationals, who started the season 19-31 (poorly) started playing better. …