Adding another covered tune to his list of many, 'Late Night' host Jimmy Fallon decided to perform a duet with last night's guest Selenz Gomez. Their choice? The beloved 'Mario Kart Love Song.'

Gomez stopped by to promote her new much-talked-about film 'Spring Breakers.' Together, the two donned the famed plumber's mustache along with a cap and a crown, and succeeded in belting out an emotional rendition of the love song -- at least, as emotional as a song about Mario Kart can get.

Our guess is that YouTube's Sam Hart (the song's originator) is pretty happy with the video, seeing as a whole new audience is sure to find their way to his material.

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