We had to sing this stupid song in spanish, I wonder if it's the same song... From what I remember, it went something like

Coge tu sombrero, y pontelo
vamos a la playa, calienta el sol.
chi-ri-ri-ri-ri, pom pom pom pom
chi-ri-ri-ri-ri, pom pom pom pom

which means something like

Grab your hat, and put it on
let's go to the beach, and get warmed by the sun
la la la la la la la la
la la la la la la la la

Oh yeah, it's also a pretty cool song by the Pixies off the album Surfer Rosa.