Los Angeles mayor Eric Garcetti talks to the crowd at the King’s rally at Staples Center Monday, June 16, 2014.
Los Angeles mayor Eric Garcetti talks to the crowd at the King's rally at Staples Center Monday, June 16, 2014. (Photo by David Crane/Los Angeles Daily News)

Mayor Eric Garcetti instantly joined the ranks of the L.A. Kings' most enthusiastic fans on Monday, intentionally dropping the F-bomb on live television as he and thousands of fans gathered inside Staples Center to celebrate the team's Stanley Cup win.

"There are two rules in politics," he said to a cheering crowd at a rally inside Staples Center.

"They say never, ever be pictured with a drink in your hand, and never swear but this is a big f...day."

Social media embraced the usually polite mayor's expressiveness and F-bomb, with some online posters joking that he just won his next election.

After Garcetti ended his speech, Hall of Fame broadcaster Bob Miller said: "I have to follow that?!"

Miller then introduced Luc Robitaille, former Kings player, a Hall of Famer and Kings president of business operations, who playfully scolded the mayor before the crowd: "We told our players not to cuss. Thanks!"

The speech was carried live on Fox Sports West with no bleeps. A few moments later, an announcer offered the network's apology: "On behalf of Fox Sports West, we'd like to apologize for the inappropriate language heard earlier back inside."

Had the Kings lost, Garcetti would have had to sing "New York, New York" tonight on Jimmy Kimmel Live tonight, based on his bet with New York Mayor Bill de Blasio. Tonight, instead, de Blasio will appear on the show and sing Randy Newman's "I Love L.A."

The day before, Garcetti said he would have grown "a big beard" so that he could shave it off along with many of the team's players, who promised not to shave their beards after entering the playoffs until they won the Stanley Cup, he said. The "playoff beard" tradition was first started in the 1980s by the New York Islanders.

Staff Writer Jill Painter Lopez contributed to this report.