It started as a tweet from the mayor of San Francisco's Twitter account wishing the San Francisco Giants luck in Wednesday's NL wild-card game. But things quickly spiraled into smack talk and a bet that could shake up one of the mayors' Halloween plans.
Mayor Ed Lee tweeted saying he was rooting for the Giants.
— Mayor Ed Lee (@mayoredlee) October 5, 2016
A few minutes later, New York City mayor Bill de Blasio responded with his first jab in support of the New York Mets.