This is Fandango:

He's a WWE wrestler whose gimmick is "a dancer." Did I mention that his name is "Fandango?" Well, in the past week he's become something of a phenomenon. This is Fandango's theme music (it's called "ChaChaLaLa," if you can believe it):

Catchy, right? Like, pretty much insidiously catchy. So catchy that the crowd at Monday Night Raw has taken to singing it, soccer-chant style. Here's a clip of the crowd at the IZOD Center singing it in the corridors on their way out of the building on Monday:

It appears the live WWE crowds aren't the only ones who can appreciate a solid hit when they hear it. There were reports that after the Royals won their game on Wednesday night, Fandango's theme played over the PA system in celebration. A short while later, the official Royal Twitter feed confirmed those rumors:

Let's have this usher in a golden age of baseball stadium celebration songs. There have been far worse. In 2000, the celebration song for the San Francisco Giants was "Who Let the Dogs Out?" They played it after every win. Weighed against that, Fandango's theme is a huge step up.

Sing it with me, now: Duh DUH. DUH DUH duhduh duh duh duh DUH. DUHHHHHH DUH DUH DUH.