"Primer día" (English "First Day") is a song by American singer Julieta Venegas and Argentinean rapper Dante Spinetta, which was the fourth single from the album Limón y Sal.

The video shows Dante Spinetta walking down the city with a typical fruit vendor attire, pushing a kart loaded with watermelon, while Julieta, dressed in Asian motifs, tours the city in the back seat of a taxi.

The two meet by chance when the taxi accidentally cuts Dante's way abruptly and the fruit splatters on the street.

The audience is then shown a series of still takes and animations of Julieta dressed as a stereotypical ninja fighting with a sword, while Spinetta raps in front of typical ninja-movie imagery.

After a little singing in the cab, another set of stills and animations with the singers dressed up in a more modern style with slot machine and other casino imagery in the background.